Viego, the Ruined King

Dominion of the Ruined—Whenever a creature an opponent controls dies, you may pay {1}{b}. If you do, create a 2/2 black Zombie creature token with “This creature can’t block.”
Soul Corruption—{2}{b}, {t}: Gain control of target creature until end of turn. Untap that creature. It gains haste and becomes a black Zombie in addition to its other types. Sacrifice it at the beginning of the next end step.
Heart of the Isles—If Viego, the Ruined King would die, you may