Powers up the user’s moves when a unity bonus is in effect.
Power Chain (Japanese: ＩＣ時威力上昇Power Boost During Unity Chance) is a family of skills in Pokémon Masters EX.
Effect
When unity bonus is in effect during a co-op battle, the power of the Pokémon's moves are increased by 10% per rank of this skill. This applies to the Pokémon's attack moves, including buddy moves, but not sync moves or max moves.
This skill is an additive multiplier; when multiple additive skills affect the same move, they are first summed and then multiplied by the move's power.
Sygna Suit Steven & Deoxys's passive skill Power Combo 2 was originally named Power Chain 2, even though its effect is unique and unrelated to the existing Power Chain skills.
buddy moves, but not sync moves or 
max moves.
1★ Crunchy Lucky Cookie
2★ Crunchy Lucky Cookie
3★ Crunchy Lucky Cookie
