Krunai, Warlock of the Guard

Draft Krunai, Warlock of the Guard face up.
As you draft a card, you may remove it from the draft face down. (Those cards aren't in your card pool.)
{1}{b}{r},{t}: Krunai deals X damage to target creature or player, where X is the highest converted mana cost among cards you removed from the draft with cards named Krunai, Warlock of the Guard.