Elder Spawn 
Creature — Spawn
At the beginning of your upkeep, unless you sacrifice an Island, sacrifice this creature and it deals 6 damage to you. This creature can't be blocked by red creatures.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL