Reading the War Caster feat again, I'm having a doubt about the following sentence:
You can perform the somatic components of spells even when you have weapons or a shield in one or both hands.
I'm trying to figure out the implications of this feat when using a hand to grapple an opponent. It looks like wielding a shield would be enough to perform somatic components, but wielding a single weapon would not - the plural suggesting you must hold 2 weapons (potentially, in one hand...) to do so.
Am I reading this correctly, or am I paying my lack of involvement during english lessons ?
More context: I'm considering spells such as Primal Savagery, Shocking Grasp, Inflict Wounds, Vampiric Touch to deal reasonable damage to a grappled, prone opponent, while wearing a shield. Double-checking RAW here, and adding the "weapons" issue for the sake of completeness.