Asriel, Final Form

Trample, Flying, Indestructible

Power of the Underground - When Asriel, Final Form enters, exile any number of your creatures. Asriel’s power and toughness are equal to the number of exiled creatures. When Asriel dies, return the exiled creatures to the battlefield tapped.
Just let me win! {w}{u}{b}{r}{g}{t} - The opponent chooses a creature. Exile all other creatures.