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Allow me to explain it to the confused niglet. You see this UI here? That shows the ACTs a Pokémon can do within its TURN on being able to ACT. What we see here is that Lucario will ACT once and then his TURN will end and change to Gastrodons TURN to ACT once. Afterwards, it will be Lucario's TURN but now he will be able to ACT twice. Its a system that even Octopath uses and it's still turn-based.