History Main / ManaDrain

* ''VideoGame/{{Hearthstone}}'': The [[Recap/SouthParkS10E8MakeLoveNotWarcraft Sword of a Thousand Truths]] drains your opponent's mana completely when you attack them.

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.

* ''VideoGame/Hearthstone'': The [[Recap/SouthParkS10E8MakeLoveNotWarcraft Sword of a Thousand Truths]] drains your opponent's mana completely when you attack them.

* In ''Literature/WaxAndWayne'' Leechers - chromium Allomancers - can instantly burn all the metal in other Allomancers' bodies through touch, depowering them until they can replenish their reserves.

* ''Fanfic/AFrozenFlower'': In Chapter 4, Oz drains Orchid of her energy in order to power his healing abilities, and then does it again to draw her of her power entirely so she's not a threat anymore.

* In ''ComicBook/MyLittlePonyFriendshipIsMagicIDW'', Changelings are stated to be able to do this, as Queen Chrysalis intends to drain Twilight of her magic.
* In ''ComicBook/SinestroCorpsWar'', the Manhunters have built-in power skulls which can suck the charge out of a Green Lantern's power ring in seconds.

* In the ''Literature/EnchantedForestChronicles'', this is how all wizard magic works: their [[MagicStaff staves]] automatically draw in magic from the environment and store it to be used in spells. The effect is normally limited to close proximity, but can be expanded greatly for a short time. It also causes a severe allergic reaction in magical creatures such as dragons, and probably worse with long exposures.

* In ''Manga/BlackClover'', Asta's Black Clover Grimoire summons AntiMagic swords that drain mana on contact. This makes them extremely dangerous for anyone but Asta (who has no mana at all) to wield.

* Literature/WhateleyUniverse: It is not uncommon for mages to try to drain opposing mages' Essence as an opening move in a fight; some also engage in SuperhumanTrafficking, trapping less-experienced Wizard mutants to use them as Essence batteries. The Mystic Arts department at [[SuperheroSchool Whateley Academy]] makes teaching students how to defend their 'Wells' a priority.

* Literature/WhateleyUniverse: It is not uncommon for mages to try to drain opposing mages' Essence as an opening move in a fight; some also engage in SuperhumanTrafficking, trapping less-experienced Wizard mutants to use them as Essence batteries. The Mystic Arts department at [[SuperheroSchool Whateley Academy]] make teaching students how to defend their 'Wells' a priority.
** The 'Three Little Witches' are a trio of [[DeliberatelyCuteChild adorable middle school girls]] who happen to be recently-manifested Wizards. They spent much of the sub-freshman year trying to gather enough Essence to 'light' their Wells. This led them to repeatedly try to steal Essence from older students, usually with disastrous results.

** Fey has used this to knock {{Mook}}s and hostile animals unconscious.

* Literature/WhateleyUniverse: It is not uncommon for villainous mages to try to drain opposing mages' Essence as an opening move in a fight; some also engage in SuperhumanTrafficking, trapping less-experienced Wizard mutants to use them as Essence batteries. The Mystic Arts department at [[SuperheroSchool Whateley Academy]] make teaching students how to defend their 'Wells' a priority.
** The 'Three Little Witches' are a trio of [[DeliberatelyCuteChild adorable middle schoolers]] who happen to be recently-manifested Wizards. They spent much of the sub-freshman year trying to gather enough Essence to 'light' their Wells. This led them to repeatedly try to steal Essence from older students, usually with disastrous results.

* ''LightNovel/HighSchoolDXD'': Vali Lucifer's Sacred Gear, Divine Dividing, gives him the ability to drain half of an opponent's power for every ten seconds they make contact.
* In ''LightNovel/KonoSuba'' Wiz, a Lich, and Kazuma have the "''[[TouchOfDeath Drain Touch]]''" ability, which allows them to drain mana and/or [[LifeDrain HP]], as well as transfer it to others.

* Mana Drain spells exist in ''LightNovel/ReZero'', and since mana is essentially a person's life energy, draining one's mana can seriously tire or even kill them.

** Some games have enemies doing a "strange dance" which lowers one's mana. This was [[ShoutOut referenced]] in the baseball episode of ''LightNovel/HaruhiSuzumiya''.

** ''VideoGame/DigitalDevilSaga'' changes the name to MP Drain and reclassifies it from Almighty to Mute. Knowing this makes one BonusBoss, Orochi, much easier if you have Null Mute.