The angel is a fourth-level creature from the Haven town in Heroes of Might and Magic IV. The angel is one of the most powerful creatures in the game, and Resurrection can allow you to bring a powerful stack back to life - even parts of the angel stack, if some of them are still alive. Beware of imps, though; stolen mana will make the spell too expensive. It's stronger than the champion, but more expensive, and you need a steady supply of crystal - which is usually harder to come by than ore and wood.