Genshin Impact
Build a party of four and read the synergy at a glance
Pick a character, gear them up, choose a target — the numbers move as you do.
★★★★★
Attributes
Character — Normal Attack
Reaction
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The rest of the team
Weapon
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Artifacts
Substats
%%%Target
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No elemental reactions in this party yet
No resonance — needs two of the same element
Energy: 0 · Battery: 0/12
Genshin Impact reactions are not a table to memorise: they depend on who applies first, how long the aura lingers on the enemy, and who detonates it. The Fusion Lab takes your team of four and tells you which reactions it can genuinely produce, not which are theoretically possible.
It also names what the team lacks: a steady elemental applier, a source of healing or shielding, or Energy Recharge too low for the burst to come back every rotation.
Pick characters from the grid or add them straight from any character page, then read the team summary. Swap one out and watch the analysis change — that is the fastest way to understand why one team works and another does not.
Teams you save stay in your browser and are never uploaded anywhere.
Vaporize and Melt multiply damage directly, which is why so many teams are built on them. Quicken, Spread and Bloom scale on Elemental Mastery far more than on ATK. Freeze and Electro-Charged work through control rather than damage alone.
Each of them has an ordering condition: who applies first and who follows. The lab works that ordering out for you.
