Avatar of Might (10E 251★)

Creature — Avatar • Mana cost: {6}{G}{G} • Tenth Edition • Rare

If an opponent controls at least four more creatures than you, this spell costs {6} less to cast.
Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

In their most desperate hour, the elves of Llanowar had one song left to sing.

Illustrated by rk post.