As One is the name of two separate Abilities. Each one is the signature Ability of Calyrex in either its Ice Rider or Shadow Rider forms
Both versions of As One are functionally distinct, despite having the same name.
Gastro Acid fails if the target has either version of As One. Role Play, Skill Swap, and Entrainment fail if either Pokémon has As One. As One cannot be copied by Trace, Power of Alchemy, or Receiver. As One cannot be replaced by Mummy, traded by Wandering Spirit, or suppressed by Core Enforcer or Neutralizing Gas.
Outside of battle
As One has no effect outside of battle.
Pokémon with As One
|Pokémon||Type||Ability 1||Ability 2||Hidden Ability|
|Ice Rider Calyrex||Psychic||Ice||As One||None||None|
|Shadow Rider Calyrex||Psychic||Ghost||As One||None||None|