Aegis Shield - This buff is consumed to negate the next source of damage dealt to the target.
Type: buff - Category: Shield
See also: | 
Aegis Shield | 
Blending In | 
Damage Reflection | 
Ethereal Spirit | Invincibility | 
Shrouded | 
Unbreakable Heart
The shielded character receives no damage from the next source of damage dealt to it. This includes one application of any damage over time effects like Burn or Poison. Any attacks that would've inflicted a status debuff like Daze and Exhaustion will still apply.
The nice benefit of a shield is that it doesn't run out as long as the hero have not been hit. This could be managed by having a tank that Taunts and draws attacks away from the rest of the party, while casting a shield on the remaining members of the party.
When dealing with enemies with a shield, quickly use a basic attack or attacks that deal multiple strikes to remove it.
Heroes like Yasmin Bloom and Augustus the Paladin have the ability to add a shield to the party. Zen can put an aegis on himself with his basic attack 
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((image, Aegis looks more transparent nowadays))
Heroes
The following heroes have or can inflict/apply Aegis Shield:
Angelic (Trait): Cannot be Poisoned, Burned, Frozen, Chilled, Envenomed, Shocked, or Diseased and starts dungeons with an [Aegis Shield].
Aegis Wall (Special Attack): Heals and Shields the team, negating the next damage source received at the cost of the Shield expiring immediately. Debuffs can still be applied.
Shielding Soul (Trait): When killed, remaining allies gain an Aegis Shield.
Tit for Tat (Trait): Aegis Shield will be generated when damaged. Any CRIT taken on this Hero will cause them to CRIT on their next action, even if elementally disadvantaged.
Valkyrie Valor (Trait): If there is a Legendary Fire Warrior ally on the team, Astrid becomes Fast and other Warrior and Honorbound allies start dungeons with an Aegis Shield.
Way of the Monk (Trait): Immune to CRITs and starts dungeons with an Aegis Shield.
Tit for Tat (Trait): Aegis Shield will be generated when damaged. Any CRIT taken on this Hero will cause them to CRIT on their next action, even if elementally disadvantaged.
Tit for Tat (Trait): Aegis Shield will be generated when damaged. Any CRIT taken on this Hero will cause them to CRIT on their next action, even if elementally disadvantaged.
Aegis Bandage (Special Attack): Heals the team and Shields target ally, negating the next damage source received at the cost of the Shield expiring immediately. Debuffs will still be applied.
Immunity
The following heroes are immune to Aegis Shield:
Chaos Missile (Basic Attack): Basic Ranged Chaos attack on a single target. Chaos Damage is shield and armor-piercing and it cannot be dodged or parried. It ignores the five Elemental Resistances as well as Damage Reduction. But never scores a CRIT.
Cataclysmic Conflagration (Special Attack): Sacrifices self, dealing shield-piercing damage to all enemies with 100% base chance to purge all buffs and add Soulfire Burn to enemies hit. Removes all enemy corpses. Can't be dodged.
Solar Flare (Special Attack): Shield-Piercing Ranged Light Attack on all enemies for [??% ATK] base damage with 100% chance to Blind. Consumes all stacks of Solar Scales, and deals additional damage based on the number of stacks consumed. Starts Powered.
Infernal Inferno (Special Attack): Shield-Piercing Ranged Fire attack on all enemies that ignores Damage Reduction and inflicts Demonfire Burn on hit (damage over 2 turns, cannot be cleansed).
Windows to the Soul (Trait): All attacks are Shield-Piercing and will heal [25%/50%] of damage dealt (% healing increased with Skill). The percentage value depends on the rank (I-II) of the trait.
Storm of the Ancestors (Special Attack): Shield-piercing ranged lightning attack on all enemies, consumes all stacks of Storm Power, dealing 10% more damage for each Stack of Storm Power. Adds a Buff to all allies that increases their damage to Shocked or Paralyzed targets.
Arcane Bolts (Special Attack): Armor-Piercing and Shield-Piercing Ranged Spirit attack on all enemies.
Chaos Missile (Basic Attack): Basic Ranged Chaos attack on a single target. Chaos Damage is shield and armor-piercing and it cannot be dodged or parried. It ignores the five Elemental Resistances as well as Damage Reduction. But never scores a CRIT.
Demolishing Smash (Special Attack): Armor-Piercing and Shield-Piercing Melee Physical attack on target that Wounds target enemy. Starts Powered. 
Doom Bolt (Special Attack): Shield-Piercing Ranged Lightning attack that deals 1.5x damage against Armored tagets. If target dies, the corpse is removed.
Murky Shield (Special Attack): Shield-Piercing Ranged Dark attack that grants self Murky Shield, becoming Paralysis and Silence Immune for 3 turns. Enemies cannot Revenge while Murky Shield is activated.
Living Stone (Trait): Immune to all debuffs but can be healed normally.
Construct (Trait): Cannot be healed but is invulnerable to all Debuffs.
Construct (Trait): Cannot be healed but is invulnerable to all Debuffs.
Construct (Trait): Cannot be healed but is invulnerable to all Debuffs.
Dryad Ice (Trait): Starts dungeons in Ice Block, reducing damage taken (90% Damage Reduction) and Debuff immune until their first turn. Can't be stolen, copied, or purged.
You Can't Catch Me! (Trait): Flying allies can't have buffs removed or debuffs added by non-Flying enemies.
Ambush Tactics (Special Attack): Ranged Physical attack on target enemy and all Ranged allies attack the same target, then gain Stealth and become Invulnerable for 1 turn. Starts Powered.
Ice Block (Trait): Starts dungeons in Ice Block, reducing damage taken (90% Damage Reduction) and Debuff immune until his first turn. Can't be stolen, copied, or purged.
Living Stone (Trait): Immune to all debuffs but can be healed normally.
Construct (Trait): Cannot be healed but is invulnerable to all Debuffs.
The Last Word (Trait): Slow allies and self take 30% reduced damage from Fast enemies. Slow allies revenge attacks twice. Slow allies can't have buffs removed or debuffs added by fast enemies.
