Gorge, Elemental of the Snow

This spell costs {1} less to cast for each snow permanent you control.
Trample, frostwalk (Creatures with frostwalk can't
be blocked if defending player controls a snow land)
Snow lands you control gain "{t}: Add {s}{s}"
Whenever a snow creature enters the battlefield
under your control, put a +1/+1 counter on each
snow creature you control.