Concussion

**Concussion** is a non-damaging effect that reduces Ability Accuracy. It is commonly found in Mutant  and Science  Champions.

## List of Champions with Concussion

### Debuff

* Apocalypse
* Cable
* Emma Frost
* Gambit
* Jubilee
* Luke Cage
* M.O.D.O.K.
* Mister Sinister
* Quake
* Taskmaster
* Beast  -- Synergy w/ Kraven
* Dragon Man  -- Synergy w/ Kraven
* Kraven  -- Synergy w/ Beast/Dragon Man/Sasquatch
* Sasquatch  -- Synergy w/ Kraven
* Spider-Ham  -- Synergy w/ Scorpion
* Wasp

### Passive

* Psycho-Man
* Stryfe
* Taskmaster

### Variants

**Concussion - Debuff, Self-Inflicted**

* Attuma

## List of Champions that counter Concussion

### Immunity

* Archangel
* Emma Frost  -- While in Diamond Form
* Longshot  -- Non-Debuffs only
* Mephisto  -- Signature Ability, Passives only
* Mordo  -- Passives only)
* Mysterio  -- While Mysterio's Helmet is active
* Nimrod  -- When fighting Mutant Champions
* Old Man Logan
* Omega Sentinel  -- When fighting Mutant Champions
* Shocker  -- Debuffs only
* Shuri

## Trivia

* Before Update 33.0, Karnak 's Daze on his Special 3 was labelled as a Passive Concussion, albeit only reducing Defensive Ability Accuracy, however this was replaced with a Disorient Debuff after Update 33.0.
* Special Concussion is a variant of Concussion that only reduces Ability Accuracy during the Opponent's Special Attacks; however it is unaffected by Emma Frost 's Concussion Immunity and is therefore a separate effect.
* Immunity to all forms of Ability Accuracy Modification grants full immunity to Concussion. Immunity to Passive Ability Accuracy Modification grants immunity to Concussion Passives only.

## Navigation

**Damaging Debuffs:** Bleed ● Coldsnap ● Curse ● Damnation ● Degeneration ● Disintegrate ● Incinerate ● Neuroshock ● Plasma ● Poison ● Power Burn ● Rupture ● Shock ● Soul Barb

**Non-Damaging Debuffs:** Agility ● Armor Break ● Armor Shattered ● Beeper ● Bleed Curse ● Bleed Vulnerability ● Buff Immunity ● Busted ● Careful Study ● Combo Detonation ● **Concussion** ● Cowardice ● Crush ● Dark Sting ● Dark Tide ● Daunted ● Debilitate ● Debuff Siphon ● Decelerate ● Decreased Combat Power Rate ● Degeneration Vulnerability ● Delirium ● Disorient ● Distraction ● Energy Vulnerability ● Enervate ● Ensnare ● Exhaustion ● Falter ● Fate Seal ● Fatigue ● Feedback ● Fragility ● Heal Block ● Ineptitude ● Infuriate ● Injury ● Intimidate ● Klyntar Debuff ● Living Abyss ● Neutralize ● Organic Magnetism ● Overload ● Pain Link ● Petrify ● Physical Vulnerability ● Plasma Build Up ● Power Detonation ● Power Drain ● Power Leech ● Power Lock ● Power Sting ● Rage ● Root ● Sabotage ● Shock Vulnerability ● Shrivel ● Siphon Burn ● Siphon Charge ● Slow ● Smother ● Special Concussion ● Special Lock ● Spectre ● Stagger ● Stifle ● Stun ● Sunder ● Suppression ● Taunt ● Torment ● Tracking ● Tranquilize ● Transfix ● Trauma ● Unsteady ● Weakness ● Whiplash ● Wither

**Passives:** Acid Burn ● Atrophy ● Caltrops ● Critical Failure ● Essence Steal ● Frostbite ● Incinerate Vulnerability ● Inverted Controls ● Magnetized ● Marked ● Neurotoxin ● Nova Flame ● Power Leak ● Vulnerability

**Other Detrimental Effects:** Buff Steal ● Life Steal ● Nullify ● Om Nom ● Power Steal

**Retired:** Black ISO-8 ● **Daze** ● Heal Reversal (Phantasm) ● Hex (Fate Seal) ● Hex Vulnerability ● Paralyze ● Thermal Feedback ● Thunderquack ● Vulnerability (Fragility)