Citazione Originariamente Scritto da DIABLO III PTR 2.7.2
New Season Theme: Season 25 introduces a new type of socketable item called Soul Shards. Nephalem can find 7 unique Soul Shards, based on the Lords of Hell, which give players demonic new powers. One of 3 Prime Evil Soul Shards can be equipped into Helms and one of 4 Lesser Evil Soul Shards can be equipped into Weapons. Each Soul Shard can be upgraded three times using a new seasonal-exclusive consumable, the Hellforge Ember.

Soul Shards and Hellforge Embers can drop from anywhere in Sanctuary, but Soul Shards have a higher chance to drop from Bosses. Soul Shards cannot be traded, but can be salvaged or utilized in Caldesann’s Despair. You may only equip one Prime Evil Soul Shard and one Lesser Evil Soul Shard at a time. Lastly, Soul Shards and Hellforge Embers only drop in Seasonal play, and will not transfer to your non-seasonal character when the season ends.

Citazione Originariamente Scritto da Developer's Note
With the upcoming 25th Anniversary of the Diablo Franchise, we wanted players to delve into the darker side of the Nephalem's past. In Season 25, players can embrace evil by infusing themselves with the essences of the Lords of Hell. Players will embark on their Season Journey to discover and upgrade demonic Soul Shards based on the seven Lords of Hell. By embodying a Prime and Lesser Evil, players will inflict new forms of pain and suffering on the demons of Sanctuary. We can't wait for players to get their hands on Soul Shards to start unlocking their true power.
https://us.diablo3.com/en-gb/blog/23730897