If you wear armor that you lack proficiency with, you have disadvantage on any ability check, saving throw, or attack roll that involves Strength or Dexterity, and you can’t cast spells. War Caster does not grant you proficiency with the shield, you need to pick that up from Moderately Armored feat or multiclassing.
Can you stack Shield and shield of faith?
Yes, Shield of Faith, being a bonus, stacks. Reasoning behind this is that Mage Armor sets your base AC while Shield of Faith increases your AC. Multiple sources of setting base AC do NOT stack, while all sources of increasing your AC DO.
Can a Shield stack?
Since Shield and Mage Armor aren’t the same spell their effects can overlap just fine. So yes, they stack.
Can you cast a spell with your sword and shield?
You can’t cast spells while holding your two-handed sword or your sword and shield without the War Caster feat. This is spelled out on page 203 of the PHB: If a spell requires a somatic component, the caster must have free use of at least one hand to perform these gestures.
Can a war caster use their reaction to cast a spell?
You can perform the somatic components of spells even when you have weapons or a shield in one or both hands. When a hostile creature’s movement provokes an opportunity attack from you, you can use your reaction to cast a spell at the creature, rather than making an opportunity attack.
Do you need a feat to cast a spell?
If a spell requires a somatic component, the caster must have free use of at least one hand to perform these gestures. However, you don’t necessarily need to take the feat in order to use a two-handed sword or a sword and shield and cast spells.
What are the benefits of being a spell caster?
You have practiced casting spells in the midst of combat, learning techniques that grant you the following benefits: You have advantage on Constitution saving throws that you make to maintain your concentration on a spell when you take damage.
