Summoning the strength of the planet; your current set of armour becomes enveloped in a layer of enchanted bark and stone pulled from the earths surface until the spell ends. Your AC becomes 13+ your spell modifier, minimum 15 AC, but fire based attacks cast against you roll with advantage. The spell ends if you remove your armour or if you dismiss the spell as an action.

At higher levels you can pick resistances to add to your armour for the duration of the spell, you can pick any combination of resistances from bludgeoning, piercing, slashing, force, cold, psychic and lightning. Higher levels grant an increased amount of resistances that can be added; 1 resistance at 3rd level, 2 resistances at 5th level, 3 resistances at 7th, 4 resistances at 10th level, 5 resistances at 15th level and 6 resistances at 20th level.