Shaymin Sky Forme's Weaknesses

Best Counters

Shaymin Sky Forme is especially weak against Ice type Pokemon, they will deal 4x damage to it!

The types that are strong against Shaymin Sky Forme are Ice, Fire, Flying, Poison type Pokemon.

For the best defense, Steel types have very effective defense against Shaymin Sky Forme, and will be resistant to damage from Shaymin Sky Forme's STAB attacks:

Rock types will also deal super-effective damage against Shaymin Sky Forme, but be careful using Pokemon of this type because they may also receive extra damage from some of Shaymin Sky Forme's attacks!

Weaknesses

Shaymin Sky Forme's type is Grass and Flying.

Shaymin Sky Forme is especially vulnerable to Ice attacks, it will receive a super effective four times (4x) the amount of damage! Since Ice type Pokemon are especially strong against Shaymin Sky Forme, you should attack with this type of Pokemon.

Shaymin Sky Forme has a weakness to Ice, Fire, Flying, Poison, Rock types. These Pokemon types will be strong against Shaymin Sky Forme, causing Shaymin Sky Forme to take a super effective quadruple (4x) damage from Ice type attacks, and causing Shaymin Sky Forme to take a super effective double (2x) damage from Fire, Flying, Poison, Rock type attacks.

Ground type attacks will have no effect on Shaymin Sky Forme, as Shaymin Sky Forme is immune to this type of damage! Please avoid these types of attacks.

Please keep in mind that Shaymin Sky Forme is resistant to attacks from Fighting, Water, Grass types, and these attacks are not very effective and cause reduced damage, so they should be avoided.