Mantle of the Void

Wondrous item, rare (requires attunement)

While wearing this midnight-blue cloth covered in writhing runes, you gain a +1 bonus to saving throws.

If you succeed on a saving throw against an enemy spell while wearing the mantle, you don’t suffer the spell’s effects. Additionally, as a bonus action on your next turn, you can infuse your next spell or melee attack with power from the Void. One creature that is hit by a spell you cast or that fails a saving throw against that spell, or one creature you successfully hit with a melee weapon attack, is stunned until the end of the creature’s next turn.

If you successfully hit a target with the slam attack granted by the wraps and the target is no more than one size larger than you, you can use a bonus action to automatically grapple the target. Once you have used this bonus action three times, the bonus action can’t be used again until the next dawn.