Blizzard just dropped a neat little cross-game carrot: Diablo Immortal is doing a World of Warcraft: Midnight promo, and the reward is a new ally — Harbinger of Darkness.
The hook is simple (and very Blizzard): you unlock the Immortal reward by doing something in WoW.
How to unlock Harbinger of Darkness (official)
According to Diablo Immortal’s official posts, you need to:
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Complete the World of Warcraft quest “Paved in Ash”
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Then you’ll gain the Harbinger of Darkness as your ally in Diablo Immortal
Blizzard’s messaging is consistent across channels, so you can safely state the requirement without “maybe / rumor / allegedly” language.
Why this matters (even if you don’t play WoW)
For Immortal players, this is one of those promos that:
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Drives logins because it’s time-limited “fear of missing out” energy (even when the reward is cosmetic/companion flavored).
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Hits harder for players who already bounce between Blizzard games.
And for content? It’s an easy win: you can cover it fast, and it’s the kind of crossover headline people share because it’s slightly weird in a fun way.
Bonus: the bigger picture
Some outlets are framing this as part of a wider Immortal update package (events, improvements, etc.) that includes the Midnight tie-in.
