Malignant Heart
How to get a Wrathful Malignant Invoker in Diablo 4 Season 1
The odds are good that if you're playing Diablo 4's Season 1 content, after you skip or complete the campaign you'll find yourself diving into the Malignant Tunnels in search of Malignant Hearts -- while none of them will make or break a build quite like legendary aspects, they provide varied and powerful effects.