Common Keys

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Common Keys (also called Universal Keys) are equipped on T-Dolls to provide stat boosts and extra effects. Unlike Fixed Keys (also called Exclusive Keys), Common Keys can be equipped on any T-Doll, even if they were unlocked as part of a specific T-Doll's enhancement.

Common Keys are obtained during events, by completing the Neural Helix of a T-Doll or by reaching Bond 5 with a T-Doll. They're equipped on the right side of the Key Regulation menu, while Fixed Keys are equipped on the left side..

List

From Events

Name	Rarity	Event	Effects
Heavy Metal	Purple	Sojourners of the Glass Island	Crit Rate +3% Attack Boost +3%
The Force of Bravery	Purple	Sojourners of the Glass Island	Crit Rate +3% Attack Boost +3%
Rubber Pig	Purple	Sojourners of the Glass Island	Attack Boost +3% Health Boost +3%
Fortress Gatekeeper	Blue	Sojourners of the Glass Island	Attack Boost +2% Defense Boost +2%
Pixie Cape	Purple	Sojourners of the Glass Island	Attack Boost +3% Defense Boost +3%
Delicious Canned Herring	Blue	Sojourners of the Glass Island	Attack Boost +2% Health Boost +2%
Teddy Bear Costume	Purple	Rhapsody Quartet	Attack Boost +3% Health Boost +3%
Caramel Overload	Blue	Rhapsody Quartet	Attack Boost +2% Defense Boost +2%

From Neural Helix

Name	Rarity	T-Doll	Effects
Survival Instinct	Yellow	Makiatto	Attack Boost +5% At the start of the action, if own HP is greater than 80%, reduces stability damage taken from attacks by 2 points. This can trigger at most once per turn.
All Seeing Eye	Yellow	Mosin-Nagant	Attack Boost +5.0% When this unit is under the effects of Insight, increases damage dealt by 7%.
Brilliant Medal	Yellow	Papasha	Attack Boost +5.0% Increases damage dealt by allied units' support skills (excluding self) by 10%. Can trigger at most once per turn.
All Points to Damage	Yellow	Peritya	Crit Rate +5.0% If an active skill hits 2 or more enemy targets, damage dealt is increased by 7%.
Strategic Negotiation	Yellow	Qiongjiu	Crit Rate +5.0% Increase damage dealt outside of the unit's own turn by 7%.
Hot Oil Protection	Yellow	Sabrina	Defense Boost +5.0% When dealing targeted damage, applies Movement Down II to the target for 1 turn.
Mission's Blessing	Yellow	Suomi	Defense Boost +5.0% When HP drops below 80%, restore 15% of this unit's maximum HP and gain Defense Up III for 2 turns. Can trigger only once per battle.
Afterglow	Yellow	Tololo	Attack Boost +5.0% When Confectance Index is below max, increases damage dealt by 7%.
Mangle	Yellow	Ullrid	Crit Rate +5.0% If the enemy target's HP is not full before the attack, increase damage dealt to them by 7%.
Heart Melting Strike	Yellow	Vepley	Attack Boost +5.0% If the user's Mobility is greater than or equal to the target's, increases damage dealt by 7%.
Blessing of the Morning Star	Purple	Nemesis	Attack Boost +3.0% When this unit is under the effects of Insight, gain 3 additional tiles of movement after killing an enemy target.
Sustained Endurance	Purple	Groza	Health Boost +3.0% When Shelter is active, immune to displacement for 1 time. Has a cooldown of 1 turn.

From Bond

Name	Rarity	T-Doll	Effects
Sweet Serenade	Purple	Daiyan	Crit DMG +3% Attack Boost +3% Health Boost +3%
Love So Sweet	Purple	Makiatto	Crit DMG +3% Attack Boost +3% Health Boost +3%
Rock and Roll	Purple	Suomi	Attack Boost +3% Health Boost +3% Defense Boost +3%
Stress Ball Terminator	Purple	Ullrid	Crit DMG +3% Attack Boost +3% Health Boost +3%
Heart of Gold	Purple	Mosin-Nagant	Crit Rate +3% Attack Boost +3% Health Boost +3%
Unbreakable Faith	Purple	Papasha	Attack Boost +3% Health Boost +3% Defense Boost +3%
Cat's Relaxation	Purple	Peritya	Crit Rate +3% Crit DMG +3% Attack Boost +3%
Warm as Jade	Purple	Qiongjiu	Crit DMG +3% Attack Boost +3% Health Boost +3%
Dessert Time	Purple	Sabrina	Attack Boost +3% Health Boost +3% Defense Boost +3%
Stardust's Whispers	Purple	Tololo	Crit DMG +3% Attack Boost +3% Health Boost +3%
Grand Debut	Purple	Vepley	Crit Rate +3% Crit DMG +3% Attack Boost +3%
Genius' Luck	Purple	Cheeta	Attack Boost +3% Health Boost +3% Defense Boost +3%
Midnight Reflection	Purple	Groza	Attack Boost +3% Health Boost +3% Defense Boost +3%
Healing Treatment	Purple	Colphne	Attack Boost +3% Health Boost +3% Defense Boost +3%
Scorching Protection	Purple	Krolik	Crit Rate +3% Attack Boost +3% Health Boost +3%
Making Money	Purple	Ksenia	Attack Boost +3% Health Boost +3% Defense Boost +3%
Scribbled Thoughts	Purple	Littara	Crit Rate +3% Attack Boost +3% Health Boost +3%
New Sprout	Purple	Lotta	Crit Rate +3% Attack Boost +3% Health Boost +3%
Hat Trick	Purple	Nagant	Attack Boost +3% Health Boost +3% Defense Boost +3%
Soft Whispers	Purple	Nemesis	Crit DMG +3% Attack Boost +3% Health Boost +3%
Idol's Determination	Purple	Sharkry	Crit DMG +3% Attack Boost +3% Health Boost +3%