Ring of Kalonia

Ring of Kalonia

Artifact - Equipment (CMC 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 (: Attach to target creature you control. Equip only as a sorcery.)