Instant - Until end of turn, whenever an attacking creature deals damage to target Wall creature, you gain that much life. | Instant - Choose target Wall creature. Whenever that creature is dealt damage by an attacking creature this turn, you gain that much life. |
Instant - Choose target Wall. Until end of turn, whenever an attacking creature deals damage to that Wall, you gain that much life. | Instant - Until end of turn, whenever an attacking creature deals damage to target Wall creature, you gain that much life. |