at the beginning of your upkeep, you may sacrifice a forest. if you sacrifice a snow forest this way, gargantuan gorilla gains trample until end of turn. if you don't sacrifice a forest, sacrifice gargantuan gorilla and it deals 7 damage to you.
t: gargantuan gorilla deals damage equal to its power to another target creature. that creature deals damage equal to its power to gargantuan gorilla.