Diomedes, Herald of Giants

Eminence - As long as Diomedes, Herald of Giants is in the command zone or on the battlefield, at the beginning of each end step, deal 3 damage to target non-angel, non-giant creature and three damage to target player.
Flying, Vigilance, Double Strike
{1}{b/r}{r/w}{w/b}: Search your library for up to one creature card and put it into your hand, shuffle your library