The ultimate form of the spell "Shield" that offers greater resistance at a higher risk. It is intended as a last resort in a desperate situation. Creates a layered barrier in front of the caster that affects all creatures 5 ft behind it or closer.

Affected creatures gain +7 AC while spell is active. Each layer of the spell will also block any damage type (physical or magical) that directly impacts it up to a value equivalent to the caster's Wizard level + 1d8. When used, each layer is considered a separate spell that can be casted simultaneously. I.e. Each layer takes up a 4th level spell slot. Caster can also use multiple 3rd level spell slots to fuel the spell (2 3rd level slots = 1 4th level slot).

Spells slots above level 4 and below level 7 can be used to create 1 layer per slot.

If the entire shield is not shattered, it will dissipate as normal. If it is shattered, all of the damage it endured is backlashed onto the caster alone. If they survive that, they are left with fatigue level 2.

Once used, the caster cannot cast it again until after a long-rest.

"An ancient spell, crafted by a lonely mage who, despite their best efforts, could never protect anything."