Ni'It's golem

Trample
Ni'It's golem cost 1 less for each volcanics
moutains you control.
At the end of your turn sacrifice a mountain.
Sacrifice 3 volcanics moutains, return the
Ni'It's golem from the graveyard into the
battlefield tapped
Sometimes the Idrin cultists thought Ni'It is a
peacefull goddess. Sometimes, she proves the
contrary