From Tuesday, December 17, at 1:00 p.m. PST to Tuesday, January 7, 2020, at 1:00 p.m. PST (GMT −8), you'll be able to meet Virizion in Pokémon GO raids.
How to beat Virizion?
Of the Grass and Fighting types, Virizion isn't easy to knock down. You will mainly need Pokémon with Flying moves, but Pokémon like Psychic, Fire, Fairy, Ice and Poison will also be strong against it. Groups of 4 or 5 people minimum are needed to beat it (but you can of course try to do the Raid in pairs with very strong Pokémon and a level 40).
Best Virizion counters
Rayquaza
Dragon and Flying types
Best combo: Air slash and Aerial Ace
Moltres
Fire and Flying types
Wing Attack + Sky Attack
Honchkrow
Dark and Flying types
Peck + Sky Attack
Togekiss
Fairy and Flying types
Air Slash + Aerial Ace
Lugia
Psychic and Flying types
Extrasensory + Sky Attack
Unfezant
Normal and Flying types
Air Slash + Sky Attack
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