https://www.polygon.com/2018/4/5/17202882/diablo-deckard-cain-heroes-of-the-storm-blizzard

Deckard Cain, the scholar and item identifier of Blizzard Entertainment’s Diablo series, is coming to Heroes of the Storm as a playable character, Blizzard announced today. While Cain being playable in Blizzard’s MOBA is no joke, some of his abilities definitely are.

Cain is a support character who can aid his Heroes of the Storm allies in battle by tossing them healing potions. He also benefits from sticking close to his teammates; when at least one other allied hero is nearby, Deckard gains 10 armor and his basic abilities recharge 50 percent faster.