Power Construct is unique to Zygarde. When Zygarde 10% Forme or Zygarde 50% Forme falls below half HP, it changes into Zygarde Complete Forme.
As Complete Forme has a higher base HP than the other two Formes, its HP is also restored by the same amount the maximum HP increased.
Sun/Moon: Other Cells gather to aid when its HP becomes half or less. Then the Pokémon changes its form to Complete Forme.
Pokemon with Power Construct
Power Construct as a hidden ability
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