Shadow, Ultimate Lifeform

Indestructible, Haste

Whenever Shadow, Ultimate Lifeform enters
the Battlefield, Create a Chaos Emerald Artifact Token.

{p/b}{p/r}, Sacrifice a Chaos Emerald Artifact Token: Shadow gains +5/+5 then deals damage to each player Equal to his power.

If you don't have a Chaos Emerald on your end step, create a tapped one.