Mage Armor

1st-level abjuration

Casting Time: 1 action
Range: Touch
Duration: 8 hours
Components: V, S, M (a piece of cured leather)

You touch a willing creature who isn’t wearing armour, and a protective magical force surrounds it until the spell ends. The target’s base AC becomes 13 + its Dexterity modifier. The spell ends if the target dons armour or if you dismiss the spell as an action.

Spell Lists: Sorcerer, Wizard

Source: Player’s Handbook