Ward of Dawn is a "classic" D1 Defender Titan (now Sentinel) super.
It was an extremely durable defensive bubble that, with customizable skill tree option, had a WIDE range of utility. It would include buffs like:
-[u][b]Armor of Light[/b][/u], which makes you and allies WITHIN the bubble much harder to kill and saving you from being destroyed by enemies who are dangerous when too close
(It is now standard for the Ward of Dawn in Destiny 2)
-[u][b]Blessing of Light[/b][/u] allows yourself and allies to enter the bubble and then exit with a lingering overshield with around half the effectiveness of Armor of Light but enabling your allies to be better protected while dealing damage from outside the bubble.
(This is now only achievable by equipping the exotic helmet, "Helm of Saint-14")
-[u][b]Weapons of Light[/b][/u] grants bonus weapon damage after stepping in and out of the bubble, much like the Warlock Empowering Rift.
(This is now only applied when guarding with the Code of the Commander Banner Shield Super)
Ward of Dawn has since been down played in favor of the new offensive super Sentinel Shield with the launch of Destiny 2. So much so that it is merely an optional choice within it's own Subclass tree (tap key-bind for Sentinel Shield, hold for Ward of Dawn)
The Bubble fails to produce nearly as much orbs blocking incoming damage as blocking with the Shield does, maybe half.
It costs the same amount of energy to cast as the Shield.
Has very little more versatility than a Barricade, the Titan's fastest charging ability
Armor of Light is worthless when blasted out of the Bubble
Friendlies will find it more obstructing than helpful
Weapons of Light is practically worthless since attacking with the shield and setting off detonators is more impactful than a small damage buff.
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2 Repliescareful what you wish for. Bungie most likely to nerf other titan supers to the ground so you have no choice but to use bubble.