Decant Ability

To use Decant Ability, open the menu and check key items
and use the command in order to access the Decant Ability.

Decant Ability is unremovable once used

WARNING: SPOILERS THROUGHOUT THIS SECTION

Normal Decant Ability List

These abilities can be obtained by finding them on the floor, or by speaking with certain characters. No specific requirements beyond plot points are necessary.

Japanese	English	Location	Effect
オートポーション	Auto-Potion	Obtained from Rosa in Kaipo (mandatory)	Automatically uses a Potion upon receiving damage
アイテムのちしき	Item Lore	Found in Kaipo after Edward/Gilbart's event at night	Doubles potency of items, even weapon spells from rods or staves when used as items
カウンター	Counter	Obtained from Yang's wife at Fabul docks (mandatory)	Automatically counters most attacks with the character's FIRST Command
のろい	Curse	Found in Mt. Ordeals Station 7 after defeating Scarmiglione	40 MP, reduces a target's every stats by 20%
つなみ	Tsunami	Found in Old Waterway B3 after defeating Cagnazzo	50 MP, Water attack on all enemies; high chance of Instant-Death
ギルハント	Gil Hunt	Troia Pub, back stage of the show room; membership card (100,000 Gil) required to enter	Gil gain +50%
たつまき	Twister	Magnetic Cave Crystal Room after defeating Barbariccia	60 MP, Wind attack on all enemies; instant-cast; increases Fire potency by 50%
ひきつける	Attract	Obtained from Dwarf King after Rydia rejoins (mandatory)	All enemies attack this character
こうれつぎり	Long Range	Speak to every staff member in the Development Room hidden in Dwarf Castle; put Edge's book or dirty magazine counter; defeat Itou (looks like a trap door) in the Break Room, and it show should up	Being in back row does not lower attack power
MP+50%	MP+50%	Mist Village after Rydia rejoins	Max MP +50%
かえんりゅう	Blaze	Eblan Cave after defeating Rubicante	70 MP, Fire attack on all enemies and allies
あんこく	Darkness	Steal from Odin (one-time only!)	Dark Knight's ability; doubles attack power but receives recoil damage; stacks with Jump and other Commands
レベルハント	Level Hunt	Hummingway Cave on the moon	Exp gain +50%
HP+50%	HP+50%	Obtained from a soldier on the northern roof of Baron Castle after defeating Giant of Babel	Max HP +50%
リフレクかんつう	Reflect Pierce	Obtained from Pochika's mom after defeating Bahamut	Ignores "Reflect"
エンカウントなし	No Encounters	Namingway Event: speak to Hummingway on the moon and then find Hummingway again randomly in dungeon	No random encounters
トレジャーハント	Treasure Hunt	Complete all maps	Increases drop rate of rare items
サミング	Thumbing	Namingway Event: defeat Thumbingway in Dwarf Castle. Note: you need to give Double-Bookingway in Agart a Rainbow Pudding; he'll then appear as Puddingway in the hidden pub in Dwarf Castle. Speak to him again, and he'll change to Thumbingway	Makes all enemies "Blind"
げんかいとっぱ	Break Damage Limit	Clear the game once (mandatory)	Allows damage output to exceed 9999
？？？への思い	Love of ???	Namingway Event: obtained from Weddingway in Mysidia. Note: ??? is your lover's name, the one you told Lovingway in Summon's Village	Increases attack power based on how many times Pochika has been summoned

Bond Decant Ability List

These abilities are received from former characters, sometimes indirectly. How many you get at one point depends on how many decant abilities you taught the respective character while he/she was in your party.

Japanese	English	Location	Req. Abilities	Effect
ふたりがけ	Twin Magic	Mysidia Elder after the the Twins event	0	Uses Twin magic
つよがる	Bluff	""	1 (Palom), or 2 (Porom)	Doubles Intelligence (magic attack) for one spell; cannot stack multiple Bluffs
うそなき	Cry	""	1 (Porom), or 2 (Palom)	Defense -50% to all enemies
れんぞくま	Double Cast (Chain Spells)	""	3 (each twin must have at least 1)	Casts two spells in a row
おもいだす	Recall	When Tella leaves the party	0	Success = Bio, Tornado, Break, Death, Brave, Faith, Bubble, Blizzaga; Failure = Fire, Blizzard, Thunder, Toad, nothing
ふんばる	Brace	""	1	Defense x2 in critical condition
はやくち	Fast Talk	""	2	Reduces casting time
しらべる	Scan	At Cid's bedside	0	Uses Libra on all enemies
かいぞう	Upgrade	""	1	Adds elemental effect to attack using elemental items
ぎゃくてん	Reversal	""	2	Attack power x2 in critical condition
ためる	Power (Charge)	Yang in the Sylph Cave	0	Doubles damage on next physical attack; can charge up to 3 times; stacks with Jump and other Commands
けり	Kick	""	1	Attacks all enemies with element(s) of equipped weapon(s)
がまん	Gird	""	2	Reduces damage by 75%
うたう	Sing	Edward/Gilbert in Troia	0	Lullaby, Temptation, Healing, Frog, Piglet, Speed, Heroes' Song
くすり	Medicine (Heal)	""	1	Uses the selected restorative item on all party members at once with full effect
かくれる	Hide	""	2	Hides, avoiding all attacks but unable to attack until reappeared
せいしんは	Psychic Wave (Regen)	FuSoYa in the Crystal Palace	0	Automatic MP regeneration for all party members in battle
フェニックス	Phoenix	""	1	When dying, consumes MP to revive all other party members. The percentage of MP left decides how much health is restored to the party. e.g. 100% MP = 100% HP
まほうぜんたいか	Target All	""	2	All spells become multi-target

Misc. Ability List

These abilities come with the main cast and can not be transferred.

Japanese	English	Character	Effect
かばう	Cover	Cecil	Takes damage for a party member; automatically activates for allies in critical HP
ジャンプ	Jump	Kain	Delivers double damage; exits battlefield for 1 turn before attack
いのり	Prayer	Rosa	Recover 9~15% of max HP and 6~10% of max MP; may fail
ねらう	Aim	Rosa	Shoot arrows with 100% accuracy
ぬすむ	Steal	Edge	Steals from enemy

Twin Magic Combinations

Certain powerful magic spells will be produced when two characters both select the ふたりがけ (Twin Magic) ability.

Pairing	Result	MP	Effect
Porom x Palom, or other combos	Petit Flare	30	Damage to one/all enemies
Porom x Palom, or other combos	Petit Meteor	50	Damage to all enemies
Cecil x Rosa	Ultima	99	High damage to all enemies, power akin to Meteor
Kain x main characters other than Edge	Bubble	50	Doubles max HP of the entire party
Edge x Cecil or Rydia	Bravery	50	Boost physical attack of the entire party
Rydia x main characters other than Edge	Faith	50	Boost magical attack of the entire party

Source: http://best.art.coocan.jp/ff4ds/