Twilight Drover 
Creature — Spirit
Whenever a creature token leaves the battlefield, put a +1/+1 counter on this creature.
, Remove a +1/+1 counter from this creature: Create two 1/1 white Spirit creature tokens with flying.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL