Omnath, Locus of the Void
Legendary Creature — Elemental
Omnath gets +1/+1 for each unspent mana you have.
If you would lose unspent mana, that mana becomes colorless instead.
Landfall — Whenever a land you control enters, add 
.
Unconnected to the land, it hungers.
6/6
Illustrated by
Reality Fracture Commander#88RareEnglish