Warlock Spell Slots 2024. Invocations are a major decision point, giving tons of options to customize your warlock. The 2024 warlock retains the same pact magic and spell slot progression as the 2014 version, including the ability to recover expended spell slots after a short or long rest.
Regardless of the spell’s level, any spell they cast automatically uses the highest possible spell slot for that spell. You get these spell slots back when you complete a short rest or a long rest.