Malefic Tree Beast (CST-051 SR) [Clash of the Star Trees]

[Pierce] This card gains [+200/+200] for each Seven Kings ruler you own revealed outside the game. [Enter] You may reveal a Seven Kings ruler you own from outside the game that does not share a name with other Seven Kings rulers you own revealed outside the game and keep it revealed until end of game. When this card is put into the field from your deck >>> It deals X damage to target J/resonator your opponent controls, where X is the ATK of this card.