BROKEN MINDS

Goldpool, Carnage, Green Goblin, Void

All Champions gain +1000 Armor Rating while Stunned

BRINGER OF DEATH - IV

Archangel, Apocalypse

Unique Synergy: Does not stack with duplicate synergies.
If this champion is a Horseman of Apocalypse Neurotoxin stun duration is increased by 30%.

BRINGER OF DEATH - III

Wolverine, Apocalypse

Unique Synergy: Does not stack with duplicate synergies.
If this champion is a Horseman of Apocalypse Gain +30% Critical Rating and +40% Critical Damage Rating.

BRINGER OF DEATH - II

Gambit, Apocalypse

Unique Synergy: Does not stack with duplicate synergies.
If this champion is a Horseman of Apocalypse Each Kinetic Charge grants 10% Perfect Block Chance up to a max of 100%.

BRINGER OF DEATH - I

Psylocke, Apocalypse

Unique Synergy: Does not stack with duplicate synergies.
If this champion is a Horseman of Apocalypse Gain +50% Critical Damage Rating and +50% Attack Rating when striking an Opponent at 0 Power.

BREAK OUT

QuickSilver, Magneto, Professor X, Wolverine, Beast

Magneto,Professor X,Wolverine,Beast: Reduce the Opponent’s Purify Ability Accuracy by -100% for 3 second(s) after a Well-Timed Block.
Unique Synergy: Does not stack with duplicate synergies.

BLUETIFUL PEOPLE

Sorcerer Supreme, Archangel, Nebula, The Champion

All Champions gain +[250, 325, 400] Block Penetration

BLOOD LINES

Mister Sinister, Cyclops (Blue Team), Cyclops (New Xavier School), Phoenix

Mister Sinister, Cyclops (Both), Phoenix: Special Attacks have +20% Critical Rating and gain True Strike, ignoring all Armor, Resistances, Evasion, and Auto Block.
Unique Synergy: Does not stack with duplicate synergies.

BLOOD AND GORR

Gorr, Hercules, Ikaris, Sersi

Solo Synergy: Only affects this Champion and does not stack.

BIRTHRIGHT

Professor X

All Mutants and X-Men except Professor X: +25% Special Attack Damage for each Cerebro Charge. Max 100%.
Unique Synergy: Does not stack with duplicate synergies.

BIRD TELEPATHY

Darkhawk, Sauron, Captain America (Sam Wilson), Falcon

Captain America (Sam Wilson), Falcon: Opponent Combat Power Rate is decreased by 40% while Lock-On is on a Cooldown.
Unique Synergy: Does not stack with duplicate synergies.

BIRDS OF PREY

Darkhawk, Vulture, Falcon, Hawkeye

Darkhawk, Vulture, Falcon, Hawkeye: + 5% Critical Rating and Damaging Debuffs are 40% stronger.
Unique Synergy: Does not stack with duplicate synergies.

BIOCHEMISTRY

Ant-Man, Doctor Octopus

Unique Synergy: Does not stack with duplicate synergies.

BIG GAME HUNTERS

Elsa Bloodstone, Tigra

Unique Synergy: Does not stack with duplicate Synergies.

BIG GAME

Kraven, Beast, Dragon Man, Sasquatch

Synergy Champions: Stunning a Stun Immune Champion will instead inflict a non-stacking Concussion Debuff, reducing Ability Accuracy by 60% for 5 second(s).
Unique Synergy: Does not stack with duplicate synergies.

BIG BAD DAD

Apocalypse, Stryfe

Unique Synergy: Does not stack with duplicate synergies.

BETTER LUCK NEXT TIME

Domino, M.O.D.O.K., Taskmaster

M.O.D.O.K. or Taskmaster: Bleed abilities last 2 second(s) longer.
Unique Synergy: Does not stack with duplicate synergies.

BEST MAN

Jessica Jones, Iron Fist, Iron Fist (Immortal)

Iron Fist, Iron Fist (Immortal) - Well-Timed Blocks inflict a Stagger Debuff for 2 seconds. Perfectly-Timed Blocks inflict Fateseal instead.
Unique Synergy: Does not stack with duplicate synergies.

BELIEVER

Punisher 2099, Thor

Unique Synergy: Does not stack with duplicate synergies.

BEAUTY AND THE BEAST

Beast, Elsa Bloodstone

Unique Synergy: Does not stack with duplicate Synergies.