Dark Rider

Deathtouch
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner’s control with a +1/+1 counter on it.)
Unearth {b}{b}{b} ({b}{b}{b}: Return this card from your graveyard to the battlefield. It gains Haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)