failed frog

create {x} buff green frog token creatures
flying trample
Mutate {4}{r/g} (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities under it.).

at the begining of your up keep chose one
: Create 2 buff green frog tokens
:creature gain +3/+3 until end of turn
: destory target artifact