Death-Rattle Oni 
Creature — Demon Spirit
Flash
This spell costs 
less to cast for each creature that died this turn.
When this creature enters, destroy all other creatures that were dealt damage this turn.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL