You can only use each of the following effects of "Therion "Bull" Ain" once per turn.
• You can target 1 "Therion" monster or 1 Warrior monster in your GY; Special Summon this card from your hand, and if you do, equip that monster to this card.
• You can target 1 "Therion" card you control and 1 card your opponent controls; destroy them.
A "Therion" monster equipped with this card gains 700 ATK, also it can activate the 2nd effect listed above as if it were "Therion "Bull" Ain".