Enchantment â Aura Cartouche
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.
The enchanted creature has +1/+1 and trample while itâ€™s fighting. However, trample doesnâ€™t apply during a fight.
If the triggered abilityâ€™s target is illegal when it tries to resolve, or if the enchanted creature has left the battlefield, no creature will deal or be dealt damage.
If the target creature becomes an illegal target before a Cartouche spell resolves, the spell doesnâ€™t resolve. It doesnâ€™t enter the battlefield.
If Cartouche of Strength leaves the battlefield before its triggered ability resolves, the creature it last enchanted will fight the target creature if itâ€™s still on the battlefield at that time. However, it wonâ€™t have +1/+1 from Cartouche of Strength anymore.
Each Cartouche is an Aura with â€œEnchant creature you control.â€ If another player gains control of either the Cartouche or the enchanted creature (but not both), then the Cartouche will be enchanting an illegal permanent and be put into its ownerâ€™s graveyard as a state-based action.
Cartouche is an enchantment subtype with no special meaning. Other cards may care about which enchantments are Cartouches.