Sword of Light and Shadow (Borderless) [Double Masters] Tribal Enchantment You gain life equal to

You gain life equal to the damage dealt

Set: Antiquities Type: Creature — Treefolk Rare Cost: {1}{G}{G} Gaea's Avenger's power and toughness are each equal to 1 plus the number of artifacts your opponents control

they wore the royal blue of the prince’s police

you can even find:

The Illuminati

Sword of Light and Shadow (Borderless) [Double Masters] Tribal Enchantment You gain life equal toSet: Double Masters Type: Artifact Equipment Rarity: Mythic Cost: {3} Equipped creature gets +2 +2 and has protection from white and from black. Whenever equipped creature deals combat damage to a player, you gain 3 life and you may return up to one target creature card from your graveyard to your hand. Equip {2}