Arc of the Paladin

When spell is cast, the user is covered in a white glow. All HP is restored, as well is the party's, and the user's AC is doubled. User becomes immune to all negative effects and has divine smite enchanted to all weapons. User however, loses 25% mobility and has disadvantage on agility rolls. Spell allows user to lifesteal any HP taken from enemy (ex: Deals 4 damage, heals self 4 hp). Spell lasts until battle is over or until user reaches 15% of health.