Yiazmat ( Revenant Wings ) Yiazmat is a superboss in " " . The Bestiary of " Final Fantasy XII " mentions Yiazmat as the deity among the wyrms . However in " Revenant Wings " , Feolthanos created Yiazmat as an Esper . Feolthanos could not control Yiazmat ' s power , so it was sealed in Midlight ' s Deep . The only similarity is that both of them defy the power of the gods . Battle . Yiazmat ' s basic attack is White Breath , which inflicts Stop . Cyclone makes a return and inflicts non - elemental magic damage to all surrounding foes . Yiazmat is also the only unit in the game to instantly kill one foe , which is done via Death Strike . Intercession is a new attack which fortifies all Espers on Yiazmat ' s side , same what Llyud ' s Quickening does . Yiazmat is credited as the leader , so he isn ' t hard to find , especially since he is bigger than Tiamat and Elder Wyrm ( which he resembles , but is in white ) . Yiazmat is accompanied by enemy Golems , Lamias , Cúchulainns , Raidens and Carbuncles . Yiazmat is 15 levels higher than the party ' s average level , and his Espers 10 levels higher . Recommended party is Filo , Penelo , Llyud , Kytes and Basch . Filo should equip the the Gold Earrings to protect against Stop and Kytes can equip the Goblin Pouch to Diamond or Zodiac Ore after the mission . The player can also deploy Vaan and Balthier for their powerful Quickenings , and Vaan is also a fast unit . It is recommended to obtain the Summon Gate before fighting Yiazmat , and there is only one . The recommended Espers to deploy for this fight are Golems ( due to its resistance to the Stop status and highest Stamina ) , White Hare s ( for healing ) , Lamias , and Wyverns . Leviathan is a powerful Rank III melee Esper , although another one can be deployed as well , such as Titan . The player should head to Platform 6 and clear out the Golems quickly , then move to Platform 5 . Every platform will keep spawning three Espers and a Carbuncle . The Golems and Carbuncle also spawn in a bit , so the player should take them out as well . Next the party should move to the Raiden platform and kill them quickly because the Cúchulainns and a Carbuncle are charging at the party . When the Raidens are gone , the party can turn on the Cúchulainns . The party can now advance on Platform 4 where the Summoning Gate is . The platform is guarded by two Lamias , Golems , Raidens and Cúchulainns with a Carbuncle . They can be wiped out with area of effect attacks , like Basch ' s Shining Ray and Kytes ' s spells . One should look out for the Golems that might have spawned back on Platform 6 who will come after the party . The player should capture the Gate once it ' s cleared . After taking the Gate the player should rid of Filo ' s Espers and summon the Leviathan and 4 White Hares for her . The others can summon the other Espers . Filo and her group should stay at the Gate and everyone else should move to the Raiden platform . Once the group is there and the enemies stop attacking , the group can move to Platform 6 where the Golems spawn and keep all of the enemies that come after the party at bay . The player is now ready to attack Yiazmat . The player should activate Decoy Bit and Glide and advance Leviathan to the middle platform where Yiazmat and the four Carbuncles are waiting . Yiazmat will start attacking , but Leviathan is immunized against Stop by Filo ' s Gold Earrings and can take out three of the four Carbuncles . The player must not kill all four , as doing so triggers all the enemies in the map to attack at once . Once the three Carbuncles are killed the player should try and change the direction Yiazmat is facing by moving Leviathan to the opposite direction so its Tidal Wave won ' t hit the last Carbuncle . The four White Hares can be moved behind it and have them heal Leviathan . Filo can run in with Defense , Power , and Speed Snare on Yiazmat . Yiazmat is very slow , which lets Filo zip and plant traps under him and fly away unscathed . Leviathan can handle anything that comes his way , even Cúchulainns . The player should keep manually renewing Decoy Bit on it . When Yiazmat has only a little HP left the player can storm it and overwhelm it . Basch ' s Quickening is helpful here . When the battle is won , Vaan ' s sword , the Anastasia , is fortified , increasing its Attack , Mind , Stamina , Magick , and Strength by ten each .