Root Sliver 
Creature — Sliver
This spell can't be countered. Sliver spells can't be countered.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Creature — Sliver
This spell can't be countered. Sliver spells can't be countered.