Sacrificial Intern

Indestructible.
Sacrificial Intern cannot be sacrificed.
{u}, discard two cards: draw a card
When Sacrificial Intern enters the graveyard
from the battlefield, you may exile it. If you do,
search your library for a card with CMC less
than or equal to the number of nonland
permanentsyou control. You may play that
card without paying its mana cost.
Im useful, kill me later