Spined Sliver 
Creature — Sliver
Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Creature — Sliver
Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.