White

If White is destroyed, it activates it's Self-Destruct Mechanism, dealing damage equal to the amount of Hollows created using Hollowfication Venom. Everything on the battlefield takes this damage.

Hollowfication Venom - {t}{1}{b}{g} White injects
target creature of power 3/3 or less with Hollowfication Venom, transforming them into a 1/1
Black Hollow creature token.