Emma Frost

With: Sentinel

Emma Frost: +15% Attack Rating in Diamond Form. Sentinel: +4 Physical Resistance for each Analysis Charge.

With: Colossus

Emma Frost: Emma Frost switches to Diamond Form when she and the Opponent are in the same bar of Power. Colossus: +2% increased Power Gain for each Armor Up Buff.

With: Cyclops (New Xavier School), Cyclops (Blue Team)

Emma Frost: Emma Frost can strike with Critical Hits even while the opponent is Blocking. Cyclops (New Xavier School), Cyclops (Blue Team): +10% Combat Power Rate.

With: Phoenix

Emma Frost: Whenever Emma Frost would gain one Prowess Passive, she gains two instead. Phoenix: When the Stun from Cosmic Flame Aura fails due to Immunity, gain 10 Phoenix Force Charges.

With: Dani Moonstar

Synergy Champions: Well-Timed Blocks grant a non-stacking 20% Energy Resistance Passive for 10 seconds.

With: Invisible Woman

Synergy Champions: Passive Fury, Prowess, Regeneration, Indestructible, and Limbo effects last 10% longer.

With: Kate Bishop

Emma Frost, Kate Bishop: When an Opponent fails to trigger an Evade due to Coldsnap or reduced Ability Accuracy, inflict a Frostbite Passive for 10 seconds, dealing 50% of Attack as Energy Damage when it expires.

With: Kitty Pryde

Kitty Pryde: Become Immune to reverse controls, and each time this immunity is triggered gain +1 personal Prowess. Cooldown 0.8 seconds. Emma Frost: +20% Attack Rating in diamond form and +20% Combat Power Rate in telepathic form.

With: Magneto

Magneto: Personal Armor Break and Bleed Debuffs gain +20% Duration.

With: Mysterio

Emma Frost, Mysterio: Grants immunity to reverse controls.

With: Negasonic Teenage Warhead

All Champions: +4% Health & Attack Rating.

With: Professor X

All Mutants and X-Men except Professor X: +15% Prowess Effect Duration for each Cerebro Charge Emma Frost: Up to +30% increased Critical Rating scaling with Emma's Power Meter.

With: Scarlet Witch

Scarlet Witch: Copied Buffs have 25% increased duration. All Champions: Mutant Opponents have 30% reduced Ability Accuracy during either Champions Special Attacks.