Finale

Once Finale enters the battlefield, it cannot leave except by its own effect.
{3}: Add 1 Finale counter to Finale. Any player
can activate this ability only as a sorcery.
{x}: Deal X damage to all targets where X is the
number of Finale counters on Finale then exile
Finale. Activate only as sorcery.
"Look at that thing go!"
-Late Goblin Demolitionist