Heavenly Thunderclap, Kirin

(You may only cast this spell if you control a Legendary creature or Planeswalker.)
Destroy target creature. Its controller loses X life and discards X card from their hand where X is the power of that creature. If 5 or more cards were discarded this way, exile all cards sent to the graveyard by this effect.
Begone...with the thunderclap! -Sasuke Uchiha