Dynamax Cannon deals damage. If the target is Dynamaxed or Gigantamaxed, its damage is doubled. The bonus does not apply to Eternamax Eternatus, despite its similarities to a Gigantamaxed Pokémon.
Encore fails if the target's last move was Dynamax Cannon.
As Dynamaxed and Gigantamaxed Pokémon are absent in the Ninth Pokémon generation, Dynamax Cannon now deals damage with no secondary effect.