Necrothana Deathwarden

Whenever another creature you control dies, you get a blood token.
At the beginning of your end step, choose target creature in your graveyard. If that cards converted mana cost is less than or equal to the number of blood tokens you have, return it to the battlefield. Otherwise put it into your hand.
I did not give you permission to die!
Return to your duties, unworthy of Lolth.