Marwyn, the Nurturer 
Legendary Creature — Elf Druid
Whenever another Elf you control enters, put a +1/+1 counter on Marwyn.
: Add an amount of equal to Marwyn's power.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL