Cartouche of Strength [Amonkhet] Green and what to do when

and what to do when either goes wrong

Set: Eighth Edition Type: Creature — Crocodile Rarity: Rare Cost: {3}{G} When you control no other creatures

Set: Unstable Type: Artifact — Equipment Rarity: Mythic Cost: {3} Equipped creature gets +2/+2 and has protection from Rogues and from Clerics

Set: Avacyn Restored Promos Type: Creature — Spirit Rarity: Uncommon Cost: {1}{U}{U} Latch Seeker can't be blocked

Cartouche of Strength [Amonkhet] Green and what to do whenSet: Amonkhet Type: Enchantment Aura Cartouche Rarity: Common Cost: {2}{G} Enchant creature you control When Cartouche of Strength enters the battlefield, you may have enchanted creature fight target creature an opponent controls. (Each deals damage equal to its power to the other.) Enchanted creature gets +1 +1 and has trample.