Sheogorath, Mad God

Whenever you roll a dice, announce a creature
on the board before the result is revealed.
{w}{u}{b}{r}{g}{t}: Roll a d20.
1-4: Target creature is indestructible until your
next upkeep.
5-8: Create a copy of Chaos Warp and cast it
on target creature.
9-12: Random player gains control of target creature.
13-16: Target creature becomes a food token.
17-19: Put 2 +1/+1 counters on target creature.
20: Exile target creature.