Starting on November 7th with patch 1.2.2 players will be able to find and farm special Unique Rings that each have Malignant Heart Powers from Season 1 of Diablo 4 — Season of the Malignant. Some new details have recently come to light from Blizzard about these rings such as how they are obtained.
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You can find these Unique Malignant Rings in either World Tiers 3 or 4 as a random drop.
They will also be available on the Eternal Realm as well as Seasonal Realm. Not only can they be just found through random drops alone though — players can target farm the new Unique Rings from the Echo of Varshan in the Malignant Burrow beneath the Tree of Whispers.
Read more on wowhead.com