The second bullet point of the War Caster feat reads as follows (PHB, p. 170):
- You can perform the somatic components of spells even when you have a weapons or a shield in one or both hands.
Are you allowed to cast spells in the following situations without the feat:
- when wielding a sword and shield?
- wielding a two-handed weapon, such as a greatsword?
How does this change when you have this feat? For the two-handed weapon scenario, can you not simply hold the two-handed weapon in one hand and cast the spell in the other? Or is there a rule specifying you must hold a two-handed weapon with two hands even when you are not attacking with it?