
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.)
Ring of Kalonia has 1 printing, first in Magic 2013 (2012). EDHREC ranks it #9,252 among Commander cards. It appears most in Skullbriar, the Walking Grave decks (3,564 on EDHREC).
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.