Trace

On switch-in, this Pokemon copies a random opposing Pokemon's Ability. Abilities that cannot be copied are As One, Battle Bond, Comatose, Commander, Disguise, Embody Aspect, Flower Gift, Forecast, Hunger Switch, Ice Face, Illusion, Imposter, Multitype, Neutralizing Gas, Poison Puppeteer, Power Construct, Power of Alchemy, Protosynthesis, Quark Drive, Receiver, RKS System, Schooling, Shields Down, Stance Change, Teraform Zero, Tera Shell, Tera Shift, Trace, Zen Mode, and Zero to Hero. If no opposing Pokemon has an Ability that can be copied, this Ability will activate as soon as one does.

✓ Verified for Pokémon Champions