Hydro Vortex (move) - Bulbapedia, the community-driven Pokémon encyclopedia

Mega Swampert (Duel 288) - Bulbapedia, the community-driven Pokémon encyclopedia

Shattered Psyche (move) - Bulbapedia, the community-driven Pokémon encyclopedia

Hydro Vortex (move) - Bulbapedia, the community-driven Pokémon encyclopedia

What would happen if Legendary or Mythical Pokemon were able to use Mega Evolution, use Z-Moves and Dynamax/Gigantamax at the same time? - Quora

Water Spout (move) - Bulbapedia, the community-driven Pokémon encyclopedia

Soul-Stealing 7-Star Strike (move) - Bulbapedia, the community-driven Pokémon encyclopedia

Lana (Masters) - Bulbapedia, the community-driven Pokémon encyclopedia

Hydro Vortex, International Pokédex Wiki

Acid Downpour (move) - Bulbapedia, the community-driven Pokémon encyclopedia

Hydro Cannon (move) - Bulbapedia, the community-driven Pokémon encyclopedia

Does bonding with and trusting their Pokémon empower the Mega and Key Stones? - Quora