Siege of Navehm

Enchant target player.
Enchant player can't gain life.
At the beginning of enchanted players upkeep. Siege of Navehm deals 3 damage to that player and each creature he or she controls.
Ever since Commander Hadraniel defeated Archmar Krefor at the River of Vethern 7 years ago, The legions of the demons have been scattered and no one in Asenthia had any reason to feel fear anymore. Until yesterday when Navehm, the keep of the demon slayers, fell.