Styphon's Terrifying Shadow

Flying, Indestructible, Shroud. Wither, Toxic 5

When transformed to Styphon's Terrifying Shadow,
if there are no dragons, demons, angels, demigods,
eldrazi, or gods on all opponents' battlefields with
total combined power 20 or greater, each opponent
gets a 12/10 black champion token with trample &
first strike. Then Transform Styphon. Otherwise,
Transform if an opponent loses or has no creatures.
—"You dare summon me here for this!"