Question: why do pokemon glow yellow in sword and shield?
Answer: The glowing yellow aura certain wild Pokémon display in Pokémon Sword and Shield denotes a 'Brilliant' Pokémon. ... Brilliant Pokémon also know 'unusual' moves (such as Egg Moves - moves which usually only appear in Pokémon you've bred) and a minimum of two out of their three stats will have the highest possible value.