Ultra Beast Blacephalon

Worm Hole — At the beginning of your upkeep,
you may exile Ultra Beast Blacephalon from your
hand. At the beginning of combat on your turn
you may pay {1}{b}{r}. If you do, put Ultra Beast Blacephalon from exile onto the battlefield under
your control tapped and attacking. Sacrifice it at
the end of combat.
Whenever Ultra Beast Blacephalon dies, it deals
damage equal to its power to any target.