Nettle Sentinel 
Creature — Elf Warrior
This creature doesn't untap during your untap step. Whenever you cast a green spell, you may untap this creature.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Creature — Elf Warrior
This creature doesn't untap during your untap step. Whenever you cast a green spell, you may untap this creature.