Magical Cunning is a Warlock feature gained at level 2 in the 2024 SRD. You can perform an esoteric rite for 1 minute.
You can perform an esoteric rite for 1 minute. At the end of it, you regain expended Pact Magic spell slots but no more than a number equal to half your maximum (round up). Once you use this feature, you can't do so again until you finish a Long Rest.