Arcane Vault (Exalted)

This arcane gauntlet can store any spells cast into it and further boost their power, holding them until the attuned wearer uses them. This gauntlet can store any amount of spells equal to the level of the bearer at one time.

Any creature can cast a spell into the gauntlet by touching the gauntlet as the spell is cast and taking necrotic damage equal to the spell's level. The spell has no effect, other than to be stored in the gauntlet. Multiples of the same spell can be stored within. If the gauntlet can't hold the spell, the spell is expended without effect. The gauntlet cannot be refilled this way until it is emptied.

While wearing this gauntlet, you can cast any spell stored in it. The spell is cast at the highest spell slot level of the caster. The spell uses the save DC, spell attack bonus, and spellcasting ability of the current caster. The spell cast from the gauntlet is no longer stored in it, freeing up space. Whenever you cast a spell that uses a slot you can also store it in the gauntlet. When casting a spell through this gauntlet and attempting to restore the spell, roll two d20, taking either result, subtracting 1 for each time you've cast the stored spell (capped at 10), on a roll of 1-5 it is not stored, on a roll of a 18 it is cast twice and cannot be countered, on a roll of 19 it is cast thrice and cannot be countered, on a roll of 20 it is cast at 10th level and cannot be countered. Spells cast at 9th level may be cast higher by burning spells stored, increasing the level of spell cast per spell burned.

On a roll of 3 your spell burns out and you may store an unprepared spell. On rolls of 2 spell is burned out, does damage of a random type, then you may store an unprepared spell. Rolls of 1 cast spell at the lowest level at every visible target you can see, burns out, then you may store an unprepared spell. 

Spells cast through the gauntlet may be cast as a bonus action even if you have already cast a spell on your turn, if you cast a spell this way, gain a level of exhaustion.

If the bearer of the gauntlet is reduced to 0 hit points, roll one d20, any roll of 1 or 2 and the spell will be released on a random target.

Notes: Bonus: Spell Save DC, Set: Attunement Slots, Bonus: Spell Attacks, Buff, Utility, Jewelry