Ring of Kalonia - Magic 2013 - 212

Artifact — Equipment

Mana Cost: {2}

Equipped creature has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's green.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)

Uncommon · Magic 2013 · #212 (M13)

Illustrated by Erica Yang