Giant Purple Worm

Flash, Trample, Goaded.
Kill it from the inside - If an opponent would
target a creature you control, you may pay {b}{b}{p/b} to instead exile the targeted creature and
have that opponent create a 9/9 Purple Worm
token that is goaded and has Haste. When that
Purple Worm token is destroyed, flip a coin.
If heads, return that creature exiled with Giant
Purple Worm to the battlefield.