Does Mage Armor stack with a mithril shirt?

[rom90125]

Shouldn't a mithral shirt (+4 AC) stack with the spell Mage Armor (+4 AC) for an overall +8 AC bonus?

 

[Lonely Tylenol]

No.

 

[Yig]

No because they both provide the same kind of bonus.

 

[Caliban]

Shouldn't a mithral shirt (+4 AC) stack with the spell Mage Armor (+4 AC) for an overall +8 AC bonus?

Mage Armor: +4 Armor bonus
Mithral Shirt: +4 Armor bonus

Bonuses of the same type don't stack.

Mithral Shirt: +4 Armor bonus
Shield spell: +4 Shield bonus

These would stack, as one is a shield bonus and the other is an armor bonus.