Many D&D players claim that Warlocks are underpowered compared to Wizards and Sorcerers. This is partly because they have far fewer spell slots - just one at 1st level. Unlike Wizards and Sorcerers, however, Warlocks gain their spell slots back after a short or long rest, rather than just a long rest. Warlocks are also more powerful in combat than Sorcerers and Wizards, especially if you build them around their eldritch blast cantrip, hex spell, and Agonizing Blast invocation.