Diablo’s Warlock is coming to *Diablo 4* as part of the *Lord of Hatred* expansion in April, and the new demon-summoner class will look and feel very different from the version that debuted in *Diablo 2: Resurrected* in February. On Thursday, Blizzard Entertainment offered a deep dive into the Warlock, which Polygon got to play back in January at the company’s headquarters.