Demonic Demise Sword, Aqulta Gwaneff

<Darkness Dragon World> Arms - Grade 3 or greater unit with "Kyoya" in its card name (If a new Item is armed, put this card into drop) [CONT]:This card cannot be played, and it cannot be armed other than by the ability of a card with "Azi Dahaka" in its card name. [CONT](VC):During your turn, your vanguard gets [Power]+10000/[Critical]+1, and all of your units with "Azi Dahaka" in their card names get [Power]+5000. [AUTO](VC)[1/Turn]:When the unit armed with this card is attacked, the armed unit gets [Power]+15000 until end of that battle.