T:Mode$ DamageDealtOnce | ValidSource$ Card.AttachedBy | Execute$ TrigGain | TriggerZones$ Battlefield | TriggerDescription$ Whenever enchanted creature deals damage, you gain that much life.
T:Mode$ DamageDoneOnce | ValidTarget$ Card.AttachedBy | Execute$ TrigGain | TriggerZones$ Battlefield | TriggerDescription$ Whenever enchanted creature is dealt damage, you gain that much life.
Oracle:Enchant creature\nWhenever enchanted creature deals damage, you gain that much life.\nWhenever enchanted creature is dealt damage, you gain that much life.