[[quoteright:255:[[TabletopGame/MagicTheGathering http://static.tvtropes.org/pmwiki/pub/images/DrainPower.jpg]]]]
[[caption-width-right:255:[[CrystalBall Surveillance Ball]] footage of suspect. Wanted for Unlawful Tapping of Mana.]]

A subtrope of ManaBurn - a power that drains someone else's ManaMeter and gives it to the caster. Useful both to replenish the user's mana and to prevent the enemy from being able to attack back. Some opponents ''die'' when they lose all their mana.

When this is done to HitPoints, it is LifeDrain.

Compare LiquidAssets.
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!!Examples:

[[foldercontrol]]

[[folder: Anime ]]

* ''Manga/{{Naruto}}'' has encountered several enemies who have the ability to drain chakra. Most notably, Orochimaru's spy, who actively absorbed his enemy's chakra though his palm (he fought and lost to Sasuke in the preliminary of the Chunin exam).
** The [[spoiler:Juubi's roots]] have the ability to instantly absorb chakra when it transforms into its [[spoiler:God-Tree]] form. [[spoiler:Kaguya]] has the same ability through touch and her minion.
* ''Manga/{{Bleach}}'' has Zaraki's [[EyepatchOfPower eyepatch]], which feeds on reiatsu. Also function as a PowerLimiter
** Yumichika's zanpakuto could drain his enemy's reiatsu, essentially [[OneHitKill instant win]]
* A machine in later episodes of ''[[PrettySammy Magical Project S]]'' is capable of this on a mass scale.
* Many characters in ''DragonBallZ'' can absorb Ki from attacks. Android 20, a.k.a. Dr. Gero, once suckered Vegeta into using an extremely powerful attack to obliterate his hiding place, only to zip out and slurp it up through his hands before it hit.
** This is played with later in the Buu story arc. Goku fights Yakon, a creature on Babidi's ship that drains his power whenever he turns Super Saiyan. [[spoiler: He destroys it by turning Super Saiyan 2 for a very brief moment; the sudden influx of energy is too much for the creatures body and destroys it]].
* Negi Springfield of ''MahouSenseiNegima'' in his [[BlackMagic dark mode]] does this using [[{{Hellfire}} black flames]].
** To be more specific it's he only does this after absorbing a specific spell - "Hell's [[http://www.thefreedictionary.com/conflagration Conflagration]]".

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[[folder: Comics ]]

* In ''ComicBook/MyLittlePonyFriendshipIsMagicIDW'', Changelings are stated to be able to do this, as Queen Chrysalis intends to drain Twilight of her magic.

[[/folder]]

[[folder: Live Action Television ]]

* In ''Series/KamenRiderWizard'', the title character finds [[BigBad Wiseman]]'s hideout, only for Wiseman to drain the energy from Wizard's SuperMode and use it first to blast him away, then to reinforce the illusion spell that protects the hideout.

[[/folder]]

[[folder: Tabletop Games ]]

* The color Blue in ''MagicTheGathering'' has a host of such spells, as pictured above. Three such spells are [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=3903 Drain Power]], [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=1491 Mana Drain]] and [[http://ww2.wizards.com/gatherer/CardDetails.aspx?id=25567 Mana Short]].
** Mana Drain was so overpowered that Mark Rosewater, head of R&D, famously stated that the entire R&D team would have to be hit by a bus before they'd reprint it. They did eventually print a heavily nerfed version, [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=247304 Scattering Stroke]], as a ContinuityNod.
*** [[ContinuityNod There is also]] [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=369069 Plasm Capture]], which is also nerfed but still sees some EDH play.
* Steal Energy in ''{{GURPS}}'' is a highly restricted version of this.
* Power Leech, a psionic power from ''DungeonsAndDragons'', allows a Psion to slowly drain power points from other psionic characters, although only a fraction of the drained points are added to the attacker's reservoir.

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[[folder: Video Games ]]

* ''Franchise/FinalFantasy'':
** Most games have the Osmose spell. More useful for replenishing the caster's MP than removing the target's (it's usually easier to just kill them), but it's ''very'' useful for the former. It usually only costs 1 MP and can obviate the need for MP-replenishing items altogether. And since MP can easily be converted to HP by way of healing spells, this also makes it trivial to get the party back up to fighting strength between battles.
** The BlueMagic Magic Hammer occasionally works this way, but usually just [[ManaBurn lowers the target's MP.]]
** Celes of ''VideoGame/FinalFantasyVI'' has the Runic ability, which is a reactive Mana Drain: when active, all magic cast automatically targets her, and she gets MP equal to the cost of the spell without getting damaged.
** Magic Hammer pulls triple duty in ''VideoGame/FinalFantasyXI'', what with not only draining MP and giving it to you, but ''causing HP damage as well''. Blue Mages can only learn it at level 74, however. There's also [[MagicDance Aspir Samba]], which Dancers use to let party members drain an enemy's MP.
** There's also White Draw, a Dragoon skill in ''VideoGame/FinalFantasyIX''. It drains MP from an enemy and splits it among all the current party members.
** ''VideoGame/FinalFantasyVIII'' has the draw command, which lets you pull spells out of the enemies' bodies to replenish your own stock. Beware, however; some enemies, such as Ochu and [[spoiler: The final boss]] can mana drain ''you''.
** In ''VideoGame/FinalFantasyTacticsA2'', spells are kept from being overly powerful by MP starting at zero and regenerating 10 each turn. For this reason, Osmose's straight MP drain would be too powerful when used by a mage class, and we instead get the Arcanist class's "Syphon" spell which drains the opponent's MP and restores an equal amount of the casters '''H'''P. The Lanista attack "Sword of Light" still does this conventionally, probably because Seeq don't have a lot to spend MP on.
** ''VideoGame/FinalFantasyX'' has Osmose found in Wakka's Sphere Grid. If taught to your dedicated BlackMage (usually Lulu), it facilitates near [[GameBreaker game-breaking]] spamming of Flare and/or Ultima. Especially since you can pull the MP from allies if you want.
* ''VideoGame/BravelyDefault'' has the Aspir magic spell (the normal BlackMagic spell as well as the [[SpellBlade Sword Magic]] variant) and the [[OurVampiresAreDifferent Vampire's]] Magic Drain ability.
* ''VideoGame/RagnarokOnline'' has an interesting example with it's Soul Change skill. Instead of just draining mana it swaps the mana pools between the caster and his target. As a result it can also be used to replenish allies mana using your own.
* ''CityOfHeroes'' has all sorts of endurance drain powers. On the critter side, the Malta [[GoddamnedBats Sapper]] has the most obvious and drastic (half your total ManaMeter in one hit), though there are others (Arachnos Mu are less powerful than Sappers, but much more common). On the player side, Power Sink, Transference, Short Circuit, Energy Absorption, every Electrical attack, and most of the Kinetic ones.
* Mana Drain from ''VideoGame/ShinMegamiTenseiIIINocturne.''
* ''VideoGame/TheLordOfTheRingsOnline'' has the Loremaster player class, which can drain power from opponents and pass it to teammates. Certain enemies, such as the undead, can apply disease debuffs which drain your power.
* Some of the ''VideoGame/DragonQuest'' games have enemies doing a "strange dance" which lowers one's mana. This was [[ShoutOut referenced]] in the baseball episode of ''SuzumiyaHaruhi'' ("Is Haruhi trying to lower the pitcher's MP?").
** ''VideoGame/DragonQuestIX'': wands allow the user to do this with a normal attack. Of course, since they're mostly used by the SquishyWizard, you'll drain maybe one or two MP at a time.
** A couple of heroes can perform this dance as well. Taloon from [[VideoGame/DragonQuestIV DQIV]], for example, does this at random times.
* The Blood Mage in ''VideoGame/{{Warcraft}} III: The Frozen Throne'' has an ability called "Siphon Mana". This can also be used on allies, draining mana from the Blood Mage into the ally.
* In ''VideoGame/WorldOfWarcraft'', shadow priests have this ability. They also have Mana Burn, which drains the victim's mana ''and'' hurts him by the same amount at the same time.
** Mages can do this to themselves, sort of; [[BarrierMaiden Mana Shield]] will cause them to lose mana instead of health when struck.
*** Lady Deathwhisper, a boss in Icecrown Citadel, starts the fight with a mana shield which gradually drains her mana as you chip away at it. You can't even begin to hurt her until her mana pool is exhausted.
* In ''{{EverQuest}}'', Necromancers and Enchanters are masters of this trope. Actually, Enchanters are mostly obeying this trope in raids. They rarely use their (otherwise totally inoffensive) damage spells, but they use all their versions of Mana Drain (one of them even named that). Similarly, Necromancers do this, and their inversion: Mana Pump.
* "Mana Drain" is one of the many spells in the ''VideoGame/WarlordsBattlecry'' series. Also, an electrical attack will drain mana as a side effect on a critical hit. Both of these only empty the mana meter of the enemy, it doesn't steal it.
* ''GuildWars'' characters have access to a wide variety of mana-draining skills. Ironically, the similar abundance of mana-boosting skills (especially the Necromancer's powerful Soul Reaping ability), coupled with the fact that most of the monsters are [[TheComputerIsACheatingBastard oversupplied with mana]] to begin with, has led to mana-draining skills being widely thought of as underpowered and pretty useless.
* ''StarWars: Jedi Knight: Jedi Academy'' has "[[TheForce Force]] Drain" as a dark power (it was also available in the predecessor ''Jedi Outcast'', in multiplayer only).
** If it's used on you, once you run out of force power, it starts draining your health. ''Really'' powerful bosses can kill with it.
** Similarly, ''VideoGame/KnightsOfTheOldRepublic II'' also had "Force Drain" as a Force power you could choose, but as you ran into maybe a dozen Force-using enemies in a game it was largly worthless.
* ''VideoGame/SuperRobotWars'' has the Energy Taker, [[ExactlyWhatItSaysOnTheTin which does exactly what the name implies]].
* The Snow Clan of the ''Franchise/{{Disgaea}}'' series does this as their class ability. Fubuki does this directly while Yukimaru has the Hyuuga clan variant (physical attacks have a chance to inflict amnesia which disables use of special attacks).
* In the MMORPG ''AnarchyOnline'' the trader profession has powerful abilities that drain other players nanoenergy (mana in the scifi game)in pvp combat, leaving many professions crippled.
* This was one of the ways you filled your ManaMeter in ''VideoGame/SilhouetteMirage'', a PSX platform shooter. Facing one way would make you fire either life- or mana-draining bullets, depending on which kind of opponents they were. Facing the other way reversed them. Very 2-d of the game. Of course, if you didn't want to turn around you could burn 1/3 of the mana meter with a special reversal move.
* ''Franchise/{{Tales series}}'' games have the Weak/Waste status, which caused your TP/CG/EG to either slowly drain or take more than usual to use attacks.
* In ''VideoGame/PuzzleQuest: Challenge of the Warlords'', the game itself performs a "Mana Drain" on both you and your opponent when there are no more available moves.
* ''VideoGame/TitanQuest'' features several random weapon properties and a skill or two that damages mana.
* The ''VideoGame/{{MOTHER}}'' series of games features "PSI Magnet α/Ω". Both moves are free, alpha drains from one target, and omega drains from all enemies. The catch is that the enemy has to actually be able to use PSI in order for PSI Magnet to drain PP. Fobbies are great for this, because they attack in large numbers, but start with a status effect that prevents their PSI from working. Just don't overdo it, because it'll really hurt when that status effect wears off.
* Present as a Mage spell in ''VideoGame/{{Nox}}'', and notable for how it can drain mana over time both out of living beings as well as mana crystals and pylons.
* The ''Franchise/ShinMegamiTensei'' series has Mana/Spirit Drain, depending on the game. Very useful in the SMT line, not so much in the ''Persona'' line (where you're lucky to get better than twenty points back).
** Of course, while it's something of a UselessUsefulSpell for the player in the ''Persona'' series, ''enemies'' using said ability are even further into DemonicSpiders territory than quite a few enemies already are due to the difficulty of replenishing SP, particularly in ''VideoGame/{{Persona 4}}''.
** A more useful variant is in ''VideoGame/DevilSurvivor'', that may even be considered a [[GameBreaker Game Breaker]]; it gets both [[LifeDrain H]][[HitPoints P]] and [[ManaDrain M]][[ManaPoints P]], is [[NonElemental unblockable]], and is nearly the ''only'' way to restore MP mid-battle.
* The Absorb Magicka spell from ''Franchise/TheElderScrolls'' series works like this, though it's usually useless, considering that it generally replenishes the magicka that you ''just used casting it''. But if you forwent Destruction in favor of Mysticism/Restoration, then you don't have access to [[ManaBurn Drain/Damage Magicka]].
* ''{{Defense of the Ancients}}'' Lion has a channeling mana drain. His counterpart from ''{{Heroes of Newerth}}'', Witch Slayer, shares the same ability.
* [[EveOnline Eve online]] has energy vampires (usually called nos, or nosferatu after some of the different types available) that transfer some of the target ship's capacitor energy to your own. Something of a game breaker before being patched to not drain the target's capacitor to a lower percentage than your own. Some ships have bonuses to the drain amount of nos and neuts, the related [[ManaBurn mana burners]].
* ''MapleStory'' has a passive version of this, called MP Eater, for wizards of all classes that has a percentage chance to drain a percentage of a target's mana for every magic attack. Because of the way it triggers, it's useless for actually gaining mana and mostly serves to lighten the cost of mana potions.
* ''VideoGame/DarkHeartOfUukrul'' had the Sator and Rotas spells for this purpose. (One created a link, the other drew mana through it.)
* The [[Anime/Gundam00AWakeningOfTheTrailblazer ELS]] sucks EN in ''VideoGame/SuperRobotWarsUX'' with their attacks, and if their victim runs out of EN, their mecha blows up. Ironically, the Mana-dependant ''VisualNovel/{{Demonbane}}'' is immune to this, so Demonbane would be a perfect front-line fighter against the ELS.
* ''{{Descent}} II'' has Energy Bandits, which [[ExactlyWhatItSaysOnTheTin as their name suggests]], drain your weapon energy.

[[/folder]]

[[folder: Western Animation ]]

* [[OurDemonsAreDifferent Lord Tirek]] in ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', a revamp of the classic Tirek from the G1 cartoon, has the power to drain magic out of ponies to increase his own power. He can even drain the flight and weather manipulation out of pegasi and the strength and GreenThumb abilities out of earth ponies. [[spoiler:And once he becomes sufficiently powerful, he is even capable of draining the Chaos Magic power from Discord]].
* In ''WesternAnimation/{{Trollz}}'', this happened in the backstory. Simon grabbed a lot of the magic and turned it evil, taking it from male trolls and minimizing it for girl trolls. His abilities in the present day include magic-draining as well.
* In ''WesternAnimation/BarbieAndTheSecretDoor'', Malucia's magic wand drains others' magic.
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