History Main / FieldPowerEffect

* ''Franchise/YuGiOh'' has several dozen spells that give and remove field power bonuses and penalties. In the Duelist Kingdom arc of the [[Manga/YuGiOh manga]], monsters get a 20% Field Power Bonus (actual name) to attack and defence in their preferred terrain -- so bugs get it in forests, undead in wasteland, etc.

** Night battle buffs short swords, debuffs long swords and have no effect on uchigatana.

*** Bless: Raises morale and "to hit" rolls by 1.
*** Chant/Prayer: All attacks, damage and saving throws are at 1.

*** Courage, Morale and Rally all improved a unit's morale.
*** Adaptation allowed the unit to fight as if they were in their favored terrain type.
*** Selective Passage cut the movement cost (to travel through an area) in half.
*** A spell called Consumptive Field that drains hit-points from all characters in a area, potentially lethally, transferring them to the caster.
** The spells "Hallow" and "Unhallow" cause an area to favor good-aligned or evil-aligned characters respectively.

* ''TabletopGame/{{Exalted}}'' has several examples related to the Exalt type.
** To give a few examples: this is how the several of the Yozis' [[NoSell perfect defenses]] work. Malfeas' can only be used in developed areas (ranging from primitive villages to the Capitol of Heaven), while Kimberry's can only be used near big enough body of water.

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** Servants become stronger if they're somewhere [[ClapYourHandsIfYouBelieve where their particular legend is well known]]. Of course, this never comes into play since the only Japanese servant isn't even a true servant.

[[quoteright:325:[[TabletopGame/MagicTheGathering https://static.tvtropes.org/pmwiki/pub/images/boab36_prisStrands_3248.jpg]]]]
[[caption-width-right:325:[[RussianReversal In Soviet Russia, land fights for you!]]]]

A Field Power Effect is a spell or environmental condition that affects the fighting ability of one or more characters, strengthening and/or weakening them. [[WeatherOfWar Weather]] and terrain may play a factor, such as a [[PlayingWithFire pyrokinetic]] being weak during a rainstorm while an [[MakingASplash aquakinetic]] gains more power. Or a [[ThePowerOfTheSun solar powered]] hero being strongest at noon and weakest when in pitch black darkness. Terrain like the PlaceOfPower affect characters atuned to the type of energy it boosts (and its opposite). You can probably tell that due to ElementalRockPaperScissors, any Field Power Effect that boosts one set of ElementalPowers will weaken whatever is in its opposition. This is similar to how opposing sides with the ability to use StatusBuff and StatusBuffDispel can also end up canceling each other out. Other possibilities include things like time of day, year, or even the positions of planets and stars.

[[folder:Anime and Manga]]

* ''Franchise/YuGiOh'' has several dozen spells that give and remove field power bonuses and penalties. In the Duelist Kingdom arc of the [[Manga/YuGiOh manga]], monsters get a 20% Field Power Bonus (actual name) to attack and defence in their preferred terrain - so bugs get it in forests, undead in wasteland, etc.

[[folder: Mythology]]
* In some versions of the Myth/KingArthur legends, Sir Gawain's strength increases during the morning, is three times his normal strength by noon, and then wanes through the afternoon.

* ''Toys/{{BIONICLE}}'': the energy in Karda Nui causes beings of the [[LightEmUp Light]] ElementalPowers to grow larger.

** All servants become stronger if they're somewhere [[ClapYourHandsIfYouBelieve where their particular legend is well known]]. Of course, this never comes into play since the only Japanese servant isn't even a true servant.

* Terrain is a major strategic consideration in ''VideoGame/AncientEmpires'', affecting movement and defence. Bare ground and wooden bridges have no effects, grass/snow slightly increases defence, forest and hills moderately increase defence but also slightly reduce movement, mountains greatly increase defence and reduce movement, water greatly reduces movement (except for amphibious or flying units), and buildings greatly increase defence and (if an allied building) heal units each turn.

* A prominant aspect of TalesOfZestiria. [[OurAngelsAreDifferent Seraphs]] and [[TheHeartless Hellions]] can generate domains that weaken any member of the opposite species in the area. These last until a stronger domain appears, and they can [[GeniusLoci stretch over entire continents]].

->''"[[MakingASplash You]] rise with the Moon, [[PlayingWithFire I]] rise with the Sun."''

** The most {{egregious}} [[AssPull of them all]] however, is [[spoiler:Shizuno's. The deeper the other players go into the stack, the weaker their gimmicks are]]. This perfectly counters both Awai's and Saki's ability.

->''"You rise with the Moon, I rise with the Sun."''

* In ''Manga/NanatsuNoTaizai'', which inspired by Arthurian mythos below, one of the [[BoxedCrook sin]] is Lion's sin of pride Escanor, whose strength, like his namesake, grow stronger with the presence of the sun. [[spoiler: and turn out as he realized how much [[SingleTargetSexuality Merlin]] has helped him, [[HeartwarmingMoment she is his "sun"]], and he can change just by remembering her ]].

** To give a few examples: this is how the Yozis' [[NoSell perfect defenses]] work. Malfeas' can only be used in developed areas (ranging from primitive villages to the Capitol of Heaven), Ebon Dragon's can only be used where Creation's sun doesn't shine, while Kimberry's can only be used near big enough body of water.

* In the ''AgeOfWonders'' games, wizards can cast certain spells that affect an entire battlefield. Examples include Holy Light, which brightens the scenery and buffs Good units and debuffs Evil units, and its Evil counterpart, Unholy Darkness, which does the opposite.

** The series' Bible also states Earthbenders gain power from fault lines, and Airbenders from higher altitudes. Neither is elaborated upon in-show. Other effects, like rain, are self explanatory ([[http://www.racebending.com/v3/wp-content/uploads/2009/10/ipbible.pdf here]]).

* ''Franchise/{{Pokemon}}'' has Weather Effects that benefit specific types, moves and abilities. It can be on Routes starting from Gen. 3, or you can set it up with respective moves or abilities.
** Rain boosts [[MakingASplash Water moves]], weakens [[PlayingWithFire Fire moves]] and makes Thunder and Hurricane 100% accurate.
** Sun does the opposite to Fire and Water moves, makes Solarbeam skip charging and make Moonlight, Morning Sun and Synthesis heal more HP.
** Sand hurts all Pokemon that aren't [[DishingOutDirt Rock, Ground]], [[ExtraOreDinary or Steel-type]] (or have an ability to make them immune). It also gives Rock-types a well appreciated Special Defense boost.
** Hail hurts all Pokemon that aren't [[AnIcePerson Ice-type]] (or have an ability to make them immune) and makes Blizzard 100% accurate.

*** On a side note, Kyogre and Groudon have the ability to cause Rain and Sun, respectively, simply by being on the field until overwritten by another move. Rayquaza and Golduck [[AntiMagic nullifiy]] field effects simply by existing on the field.
*** Other Pokemon gained these abilities in gen V...Ninetales has the Drought ability and Politoed has Drizzle.

*** Electric Terrain prevents Pokemon from falling asleep and powers up Electric type moves.

* ''{{BIONICLE}}'': the energy in Karda Nui causes beings of the [[LightEmUp Light]] ElementalPowers to grow larger.

* In ''BattleForWesnoth,'' lawful units fight better at day, and chaotic units fight better at night (and both fight worse at the opposite daytime). As well, the Mage of Light unit can illuminate an area with their presence, being a FieldPowerBonus for lawful and a FieldPowerDrain for chaotic units at the same time.

** ''VideoGame/PokemonXandY'' added Terrain moves, which are similar to (And can stack with) weather, but with the restriction that they only affect Pokemon standing on the ground.