Ökoloth, Death Overseer

Flying, Deathtouch
When Ökoloth, Death Overseer enters the battlefield, you may return target Dragon
permanent from any graveyard onto the
battlefield under your control. It gains "When
Ökoloth, Death Overseer leaves the battlefield, sacrifice this permanent."
"They call me the Drifting Death, but even I don't
dare cross Ökoloth." - Dragonlord Silumgar