Redo

Redo Level 2 (conjuration/divination?) Range 30 feet Casting Time: Reaction Duration: Instantaneous Components: V, S, M (chronomancy focus or 1d4 HP in blood sacrifice)

You target yourself or another creature within range that has just failed an attack, save, or ability check and grant them the ability to reroll but they must keep the new roll.

Alternatively you can target someone that has just succeeded an attack, save, or ability check and force them to reroll and keep the new roll.