Rock Armor

3-level Abjuration

Casting Time: 1 bonus action

Range/Area: 20 feet

Components: S, M

Materials: a source of rock, dirt, or sand

Duration: 10 minutes

You form a suit of armor from stone around yourself or a willing creature within range, provided the target isn't wearing heavy armor. The target gains the following benefits and drawbacks until the spell ends:

The target's AC becomes 14 + your spellcasting ability modifier. It can use a shield and still gain this benefit.
It gains 3d4 + 4 temporary hit points.
Its speed is reduced by 10 feet.
It has advantage on Strength saving throws, but disadvantage on Dexterity saving throws.
It is immune to being grappled, knocked prone, and forcefully moved.

The spell ends if you dismiss it as an action, or if the target wearing the armor chooses to remove it using an action