Voracious Dragon 
Creature — Dragon
Flying Devour 1 (As this creature enters, you may sacrifice any number of creatures. It enters with that many +1/+1 counters on it.) When this creature enters, it deals damage to any target equal to twice the number of Goblins it devoured.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL