The Saradomin godsword is one of the four legendary godswords that were fought over during the God Wars. Requiring 75 Attack to wield, it is created by attaching a Saradomin hilt to a completed godsword blade.
The Saradomin godsword has a special attack, Healing Blade, which deals 175% weapon damage (though testing results show the special does up to 270% damage), and restores life points by half of the damage dealt and prayer points by 2.5% of it. The special is found under the Constitution abilities. The special has no cooldown and can be used as long as you have 50% adrenaline (or 50% special attack energy on legacy mode), making it essentially an infinite source of health and prayer points.
You can switch between the special attack and passive effect of the Saradomin godsword by using the weapon on the altar in Commander Zilyana's room in the God Wars Dungeon, however entering Saradomin's Encampment required 70 Agility. The passive effect has a 25% chance of healing 3% of your maximum life points and recovering 3% of your maximum prayer points with each successful hit.
The special attack is more useful for emergency heal situations and can heal a lot of life points instantly, especially if used under damage boosting abilities such as Berserk. The passive effect heals more consistently and has a comparable life points restore but substantially better prayer points restore. However, for players with access to superior weaponry (such as drygore weaponry) who do not wish to use a level 75 weapon (which is required in order to benefit from the passive effect), the special attack is preferable.
Official meeting point for the product committal is:
World 1 West Varrock Bank
Additional Downloadable Content