Poison ( ability ) Poison , also known as Venom , is a recurring spell in the " Final Fantasy " series . It is associated with the element Poison and the status effect of the same name . Sometimes , the spell will merely inflict the status ailment , while in other games it may deal damage as well . Recurring upgrades of this spell are Bio and Scourge . Appearances . " Final Fantasy III " . Poison is a level 2 Black Magic spell that has a base power of 20 and can be bought for 700 gil at Canaan , Tozus , and the Vikings ' Cove . It has a 60 % chance of doing minor non - elemental damage as well as inflicting Poison to one or all enemies . The enemies Pugman , Mummy , Far Darrig , and Sleipnir can use the spell against the party . " Final Fantasy IV " . Poison , originally called Venom , is a low - level Black Magic spell that can be used by Rydia , Tellah , Palom , and Fusoya . It has a casting time of 1 , and costs 2 MP to use . It has a 90 % accuracy in 2D versions , and 80 % accuracy in 3D versions . It always inflicts 1 HP worth of damage to the target . It can also be cast by using Poison Axe as an item . " Final Fantasy IV - Interlude - " . Poison returns as a Black Magic spell in the sequel of " Final Fantasy IV " . The imposter Rydia along with Palom and Rydia already known the spell . It inflicts Poison to one or all enemies at the cost of 2 MP . Poison is a low - rank spell , costing 2 MP to cast and merely inflicting the Poison status . Fusoya , Palom , Rydia , Black Mage , and Biggs start with the spell , while Leonora must learn it at level 15 . " Final Fantasy V " . Poison is a level 2 Black Magic spell that costs 2 MP to use . It can be bought for 290 gil at Karnak and Crescent . It is one of the spells that can be cast from the Wonder Wand for free , and is also an Added Ability for the Poison Axe . Poison can be cast by Calofisteri , Enuo , Flaremancer , and Omniscient . Poison can be used as part of Spellblade to add Poison - element to weapon attacks . " Final Fantasy VI " . Poison is a Attack spell that costs 3 MP to use . It is learned through the esper Ramuh at a x5 rate , has a power of 25 , a hit rate of 100 , and is vulnerable to Runic . Poison is an Added Ability of the Poison Rod and Venom Claws weapons . Poison can be cast by Hidon , Kefka in the first battle , Level 50 Magic , Level 80 Magic , Magic , Tentacle , and Tunnel Armor . " Crisis Core - Final Fantasy VII - " . The Poison spell inflicts Poison status on a single enemy and does no damage . It requires 2 MP to cast . Poison can be bought at the Sector 5 Materia Shop for 1 , 000 gil . " Final Fantasy IX " . Poison is a Black Magic spell learned by Vivi Ornitier through the Lightning Staff . It costs 8 MP to cast , and requires 35 AP to learn . The spell has a 60 % Accuracy . It can be reflected and works with Return Magic . Poison can be also cast by Mimic , Quale , Tantarian , and Torama . " Final Fantasy XI " . Poison , as well as Poisonga and Poison II , are Black Magic spells available to Red Mages , Black Mages , Scholars , and Dark Knights . When cast , the Poison status effect occurs , causing gradual HP loss . Even more powerful versions of Poison are available to certain enemy creatures as spells and there are dozens of abilities and Weapon skills that can inflict a Poison status effect . " Final Fantasy XII " . Poison is a Green Magick spell that poisons an enemy damaging them over time . Poison is a Green Magick 2 license that costs 30 LP and the spell consumes 10 MP to cast . It can be bought in Rabanastre and Nalbina for 500 gil . Its stronger counterpart is named Toxify and is an area of effect spell . In the " International Zodiac Job System " version , Poison is a Black Magick 5 license , costs 40 LP and consumes 8 MP and cannot be bought ; it is only found in a treasure in Dalmasca Estersand ' s Sand - Swept Naze . Poison has 60 % base chance to inflict the target , but is affected by the caster ' s magick power and the target ' s vitality . " Final Fantasy XIII " . Poison ( known as Bio in the Japanese version ) is an ability for the Saboteur role , and costs 1 ATB bar to cast and is classed as a debuffing spell . It deals minor magical damage and inflicts the Poison status to one enemy . It has an upgraded version , Poisonga , which targets multiple foes . Lightning and Vanille , can learn it at different Crystarium levels . " Final Fantasy XIII - 2 " . Poison and Poisonga return as Saboteur skills . It is near - identical to its counterpart in " Final Fantasy XIII " , but , like all Saboteur spells , it now deals Wound damage to its target . Serah learns on level 9 and Noel on 28 , and some Paradigm Pack monsters learn it as well . " " . is an ailment - type ability and is dropped by Gorgonopsids . It has ATB cost of 25 and magic effect time of 15 . At full level 1 it also gives Magic + 40 . " Final Fantasy Tactics " . Poison is a spell that only the Black Mage can learn . It costs 150 Job Points to learn , and requires 6 MP to cast . It has a speed of 34 . " Final Fantasy Tactics Advance " . Poison is learned by Alchemists and Red Mages . It costs 10 MP to cast , is Dark elemental , and has a range of 4 . It is stealable through the ability Steal : Ability , and is also susceptible to Return Magic , and oddly enough cannot be Reflected . " " . Poison is a spell learned by the Alchemist for 150 AP from the , costing 8 MP to cast and having a range of 4 . " Final Fantasy Tactics S " . Poison is a level 1 Enfeebling spell , exclusive to the Black Mage class , and caps at level 100 . It inflicts Poison to one enemy , can be used only once per battle , and can be used up to three times a day . " The Final Fantasy Legend " . Poison is an ability that has 25 uses and inflicts poison to one enemy . This ability is used by Red Bone , Hornet , Medusa , Serpent , Cactus , Mantcore , Anaconda , Keller , Mou - Jya , Scorpion , Ko - Run , Scylla , Tiamat , Ghast , Basilisk , and Revnant . " Final Fantasy Legend II " . Poison is a status inflicting ability that has 20 uses , it also increases a Robot ' s HP by 9 . It inflicts Pois to a single enemy . This ability can be used by Anaconda , Arachne , Basilisk , CatWoman , Champgno , DarkRose , F - Flower , F - Spider , FengLung , FireMoth , Gloom , Grippe , Hornet , Killer , Lamia , Madame , Mantcore , Medusa , Moth , Mushroom , Naga , P - Flower , P - Spider , P - Worm , Pathogen , Plague , Red Bone , Revenant , Scylla , Serpent , Shiitake , SunPlant , Swallow , Tarantla , Toadstol , Virus , Wyrm , Wyvern , and Sho - gun . " Final Fantasy Legend III " . Called Venom in the game , this Black Magic spell can inflict Poison on an enemy or cure a poisoned ally . It cost 12 MP to use , and it can be bought for 700 GP in Elan ( Past & Present ) and Lae ( Past ) . Poison is an enemy attack inflicts Poison on one enemy . This ability is used by Fungus , Starfish , Scorpion , Mushroom , Pentagon , Griffon , BlackCat , Hunter , Ammonite , Amoeba , Horus , Medusa , Osiris , Lamia , Siren , Naga , Scylla , Succubus , Sphinx , and Echidna . Poison appears as a Dark Magic spell and costs 2 AP to cast . The spell can be given to any character by having a Poison Tome in the character ' s inventory . The spell can only be purchased in Guera and Urbeth for 500 gil . " Bravely Default " . Poison is a level 2 Black Magic . It has a 75 % chance to inflict poison to one target . Poison is also a level 2 Sword Magic . It adds poison to weapon for 10 turns , in which it has a 75 % chance to cause poison in one target when attacking . It costs 4 MP . " Final Fantasy Airborne Brigade " . Poison is an Intelligence - based ability , and comes in both Rare and Rare Plus versions . The rare version has a base Attack of 750 , a base Defense of 720 , a maximum level of 60 , and a Cost of 12 . It has a fast leveling rate . Non - " Final Fantasy " Appearances . " Kingdom Hearts " . appears as a magic spell in ' for , , and . It can be melded to make the following abilities , , . It also appears in ' , for both and .