Scale Skin

5th-level abjuration
Casting time: 1 action
Range: Touch
Target: Willing creature within range
Components: V, S, M (a dragon scale)
Duration: Concentraiton up to 1 hour
Classes: Druid, Paladin, Cleric
Subclasses: --

This spell turns the flesh of a willing creature you touch as hard as dragon scales. Until the spell ends, the target's base AC becomes 15+its Constitution modifier while they arent' wearing armor.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the AC bonus increases by 1 for each slot level above 5th.