Should I Purify Shadow Articuno?

While it may take more damage, you can better know that Articuno won't take as much damage in these fights. ... We recommend you attempt to remove its frustration charged move to give it access to its best moveset, but do not purify Articuno. Never purify a legendary shadow Pokémon.

Should I purify my shadow legendary?

Due to the limited amount of opportunities you have to encounter Giovanni and catch his shadow legendary Pokémon, almost any shadow legendary you capture should never be purified. It's better to keep them in their shadow versions, and the same goes for shadow Ho-Oh.

Should you purify your Shadow Pokémon?

When is purifying a Shadow Pokemon worth it? Many players often reiterate the line that purifying a Pokemon isn't worth it in almost any situation, but there are certainly situations where a purified Pokemon is more useful, even if it loses the 20% damage buff that comes with being a Shadow Pokemon.