Mega Blob

Deathtouch, flying, indestructible, haste, reach, infect, wither
When Mega Blob enters the battlefield create 5 1/1 Ooze creature tokens.
When Mega Blob leaves the battlefield put a 2/2 Counter on a creature. Destroy target creature, curse, aura, land, artifact
Target player puts the top ten cards of their library into his or her graveyard {t}{x}
Mega Blobs power and toughness is equal to the manna you used to put the target players graveyard