Asmodeus' Bargain

You may activate this ring as a bonus action to gain advantage on all attack rolls for the rest of the turn. Once you do so, you must take a long rest before you can use this feature again.
Any time before you regain the use of this feature, the DM can have you roll on the Demonic Pact surge table after you cast a spell of 1st level or higher. You then regain the use of this feature.