Briathos,Titan of Heaven's Ire

When Briathos enters the battlefield, sacrifice it
unless it escaped.
Whenever Briathos enters the battlefield or
attacks, detain up to two nonland permanents,
then create two colorless Treasure
artifact tokens with "{t}, Sacrifice this artifact:
Add one mana of any color."
Escape—{w}{w}{u}{u}, Exile five other cards from
your graveyard.