Gordrakk, Fist of Gork

Riot, flying, trample, protection from Wizards
Gordrakk can't be countered.
Gordrakk and other creatures you control have
"When Gordrakk attacks, fight target creature
you don't control."
When a fighting creature dies, add {r} or {g} to
your mana pool. Until end of turn, you don't
lose this mana as steps and phases end.