AvraeLagom

This ring appears to be two rings woven around each other: one a crudely carved bone ring covered in strange runes and the other appearing to be made of lightning charred wood. 

While attuned to this item, any time you cast a spell, after casting the spell but before the spell resolves, you must roll a d20 to determine if a Wild Magic Surge occurs. This supersedes any other roll to determine if a Wild Magic Surge occurs. Difficulty for this roll begins at 1 and increases as follows:

• Each time you use your Tides of Chaos or Bend Luck abilities, increase the difficulty by 1 until your next Wild Magic Surge.
• Each time you cast a spell of first level or higher, increase the difficulty by that spell's level until your next Wild Magic Surge.

Additionally, while attuned to AvraeLagom, you gain the following benefits:

• You gain a +1 bonus to spell attack rolls.
• If a sorcery spell would trigger a roll on the Wild Magic table, you may opt to disregard the first result and roll again, using the new roll instead. 

Curse. This item is cursed. Attuning to it curses you until you are targeted by a remove curse spell or similar magic. As long as you remain cursed, you cannot discard the ring, which immediately teleports back onto your finger if removed. Removing the ring against the wearer's wishes results in an effect from the Wild Magic table to be determined by the DM. 

Notes: Bonus: Spell Attacks, Spellcaster, Subclass Feature