Vampiric Link
Planar Chaos — common
Enchantment — Aura
Vampiric Link rulings:
2008-04-01: You gain life for all damage which is not prevented, regardless of what the creature damages (player or another creature) or the toughness of the blocking creature. If you put this on a 5/5 and it is blocked by a 1/1, you still gain 5 life.