[RPG] Do you need an empty hand to cast spells

pathfinder-2espell-componentsspellcastingspells

The Weapon Storm spell has a somatic component1 (CRB p384):

[…] This damage has the same type as the weapon and uses the same die size. Determine the die size as if you were attacking with the weapon; for instance, if you were wielding a two-hand weapon in both hands, you’d use its two-hand damage die.

A weapon with the two-hand property can be used with 2 hands, but it is not required.
How can I use a somatic component while holding a weapon in 2 hands?

Is it possible with any spell?

1) And verbal, but that doesn't matter now.

Best Answer

You can cast any spell without material components while holding anything

Somatic components (CRB, p303):

You can use this component while holding something in your hand, but not if you are restrained or otherwise unable to gesture freely.

Material components

The spell gains the manipulate trait and requires you to have a free hand to retrieve and manipulate a material component.

Unless of course you have a focus that occupies your hand, or you are a Sorcerer, in which case you do not need a free hand for material components either.

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