Hearthstone's next expansion is titled Whispers of the Old Gods and brings a touch of Lovecraftian lore to the Warcraft card-gaming spinoff.
According to developer Blizzard, the expansion centres around the awakening of "nameless tentacled terrors" that dwell beneath Azeroth.
It introduces 134 "disgustingly potent" new cards, including new eldritch horrors as well as corrupted versions of existing cards.
Among the new cards are four Legendary Old Gods and a range of cultists that can grant the Old Gods gameplay buffs when used.
The new Standard and Wild gameplay modes will also debut with the expansion.
Whispers of the Old Gods will launch in late April or early May, with pre-purchases opening March 14th.