. When a creature doesn’t wear armor, a protective magical force surrounds it until the top of the spell, . Which is why that creature is often called a willing creature. Adding 13 to the dexterity modifier of the target will give its base AC. The spell can only be ended by dismissing it as an action, otherwise, . It will end when the target wears armor.
Despite the fact that the unarmored defense can’t work with the mage armor,. You might be asking yourself why they don’t work together. According to the specs, the mage armor works on creatures who do not wear it.
Magic Armor 5E
Duration: 1 action
Material: Cure leather
Duration: 8 hours
Available to Sorcerers and Wizards
Characters who are proficient with a certain sort of armor may cast spells without penalty when they wear that type of armor. Mage armor classes can be earned in numerous ways that are more honest. As an example, Draconic Sorcerers will receive permanent mage armor for free of charge at first level, providing their AC with 13+ Dexterity modifier. Touching a willing creature reveals that they are protected by overlapping plates of rigid magic.
Its AC is 16 until it wears armor, the spell ends, you dismiss it, or it’s successfully dispelled. Character sheets do not affect “real-time” status effects, such as casting a spell and it affecting abilities, AC, and HP immediately. Maybe in the future this will change.According to this 2016 Sage Advice, players can use shields and mage armor. The +2 bonus from a shield, however, would not stack with the Mage Armor.
Based on what I understand, the magical barrier created by Mage Armor surrounds you and anyone with you, including your shield, negating any bonus from the shield since you can only choose one method of calculating Base AC. You choose which way to use if you have multiple features that allow you to calculate your AC in alternative ways.”Shields don’t count as armor, but they’re still part of your base AC: “Armor Class (AC).
Armor protects its wearer from attacks. The armor (and shield) you wear determines your base Armor Class.”
In addition to Base AC, Mage Armor also affects Dexterity Modifier: “The target’s Dexterity Modifier becomes 13.”
Mage Armor cannot even be cast while wielding a shield unless you have skill with shields, which most magic users don’t have:
In order to wear and use armor and shields effectively, your character must be proficient with them. Your proficiency with armor and shields is determined by your class. In the Equipment section, it is explained that wearing armor or carrying a shield has drawbacks if you do not possess the specified proficiency.”
You can wear a suit of armor or strap a shield to your arm, but only those proficient within the armor’s use skills can wear it well. Your class grants you proficiency with certain types of armor. If you wear armor you haven’t mastered, you’re hindered on ability checks, saving throws, and attack rolls involving Strength or Dexterity, and you can’t cast spells.”
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