Nantuko Calmer 
Creature — Insect Druid
, 
, Sacrifice this creature: Destroy target enchantment.
Threshold — This creature gets +1/+1 as long as seven or more cards are in your graveyard.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL