Warlocks are an unusual class that have made recent gains in the RPG world, appearing in more tabletop and video games than ever before. But they've been available in Dungeons & Dragonssince the release of Complete Arcana in 2004. Their exact powers may vary, but their magical powers always involve some kind of magical or supernatural entity. In D&D, a Warlock gets their power from a powerful patron in exchange for eternal servitude.