Meglonoth

Creature - Beast
Vigilance, trample
Whenever Meglonoth blocks a creature, Meglonoth deals damage equal to its power to target player.
6/6
Not horribly good, but if a stack is lacking in creatures, he seems pretty cool
Path to Exile

Instant
Remove target creature from the game. Its controller may search his or her library for a basic land card, put it into play tapped, then shuffle his or her library.
I'm surprised nobody else has mentioned this, actually, it's targeted removal that RFGs and has no real drawback (well, barring some shuffling shenanigans) I play STP, and I don't see much of a reason to pass this up.
EDIT:
Inkwell Leviathan
Artifact Creature - Leviathan
Islandwalk, trample, shroud
7/11
This creature is certainly good enough, especially for those who play with *walk making creatures unblockable
