Ring of Kalonia - Magic 2013 #212

Ring of Kalonia

Set: Magic 2013 (M13)
Collector Number: 212
Type: Artifact — Equipment
Rarity: Uncommon
Mana Value: 2.0

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.)