Scholar's Anchoring Bangle
Source: Arcana Unleashed
Wondrous Item, Rare (Requires Attunement)
This heavy magical bracelet inures your mind against potential distractions. While wearing this bracelet, you gain the following benefits.
Deep Knowledge. When you take the Study action and make an Intelligence check using a skill in which you have proficiency, you can treat a d20 roll of 9 or lower as a 10.
Single-Minded Focus. When you fail a Constitution saving throw to maintain Concentration, you can take a Reaction to succeed instead. Once you use this property, it can’t be used again until the next dawn.