Arcane Gauntlet

This gauntlet (made for a Medium sized character) has three small indentations on the forearm. Up to three Diamonds can be fitted into these sockets. If there is at least 1 Diamond is in a slot, you can use an action to:

• Project an arcane barrier in front of the wielder equivalent to the wielder's height and width (excluding armor)
• This barrier can nullify the effects of projectile-based spells.
• The level spell that the spell nullifies is equivalent to the number of diamonds affixed to the gauntlet.
• Only one spell can be stored at a time.

Spells that are nullified by this effect are "stored" in the affixed diamonds, making them glow with arcane energy.

• Spells that have been stored can be cast using the wielder's action next turn. This action causes one of the Diamonds to shatter. 
• When the spell is cast, normal calculations are made (DC, Hit Dice, etc.) and the spell is cast at it's original level plus one.

Notes: One Diamond needs to be slotted into the arm for the duration of a short rest to achieve attunement.