Splinters of Evil

Getting them

The Season 15 questline brings Deckard Cain back. You defeat echoes of the three Prime Evils, and each one gives a Splinter of Evil. You can carry only one at a time.

What they do

While you carry a Splinter, its Prime Evil's power erupts now and then in combat. It also makes that Prime Evil hunt you, so its echoes turn up while you play.

Reputation

Each Splinter has its own reputation track, earned by running its activities. All three also count the Tree of Whispers. Each track unlocks 8 activity modifiers and 6 upgrades to the Splinter's power. The modifiers show up as green bonus lines on War Plans nodes.

Changing Splinter

To switch, go back to the largest Waking Nightmares and claim a different Splinter.

Not to be confused with

Soul Splinters are a separate seasonal system: gems for your jewellery, each with a boon and a drawback. Up to three can be socketed.