Varshan The Consumed is the new boss in Diablo 4 Season 1.
One of the best places to acquire Malignant Hearts are in the new Malignant Tunnels, highly replayable Dungeons teeming with fearsome foes to eradicate. Scour this dank system of tunnels for the catalyst of Malignant Monsters and go toe-to-toe against Varshan the Consumed, the newest Boss battle, if you dare.