Plagueburst Crawler

Menace, Trample, Reach

Whenever Plagueburst Crawler attacks you may pay {5} and choose one:
-Exile target players graveyard.
-Target player may shuffle their graveyard into their library.
Deadly Demise- When this creature leaves the battlefield, roll a d6. On a three or greater, Plagueburst Crawler deals 6 damage to all creatures.