Ring of Kalonia [Magic 2013] 083 When a creature with mana

When a creature with mana value 6 or greater enters the battlefield

as it did me on mine

Set: Mystery Booster Type: Instant Rarity: Uncommon Cost: {1}{B/P}{B/P} ({B/P} can be paid with either {B} or 2 life

It was just another day on Innistrad

Lure the Unwary — At the beginning of combat on your turn

Ring of Kalonia [Magic 2013] 083 When a creature with manaSet: Magic 2013 Type: Artifact Equipment Rarity: Uncommon 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.)