Wake Thrasher 
Creature — Merfolk Soldier
Whenever a permanent you control becomes untapped, this creature gets +1/+1 until end of turn.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Creature — Merfolk Soldier
Whenever a permanent you control becomes untapped, this creature gets +1/+1 until end of turn.