Demogorgon, Prince of Demons

Indestructible, Menace, Haste, Lifelink, Shroud
Demogorgon has to be your commander.
At the beginning of the game, put a legendary
artifact token called The Watcher's Keep onto
the battlefield under your control.
{b}{b}{b}: Destroy target nonland permanent.
{b/r}{b/r}{b/r}: Target creature fights another target
creature.
{r}{r}{r}: Goad all other creatures.