Scourge of the Nobilis
Eventide — Common
Enchantment — Aura
As long as enchanted creature is red, it gets +1/+1 and has ": This creature gets +1/+0 until end of turn."
As long as enchanted creature is white, it gets +1/+1 and has lifelink. (Damage dealt by the creature also causes its controller to gain that much life.)