Skills and Diablo 4 Items Passives

Active Skills:

Reap (Enhanced, Acolytes)
Blight (Enhanced, Supernatural)
Corpse Explosion (Enhanced, Blighted)
Bone Prison (Enhanced)
Corpse Tendrils (Enhanced, Blighted)
Soulrift (Prime, Supreme)
Decrepify (Enhanced, Abhorrent) (Optional)

Key Passives:

Shadowblight (Key Passive)
Hewed Flesh x3
Fueled by Death x3
Titan's Fall x3
Necrotic Fortitude x3
Death's Embrace x3
Amplify Damage x3
Precision Decay x3
Coalesced Blood x3
Reaper's Pursuit x3
Terror x3
Gloom x3
Necrotic Carapace
Finality x3
Memento Mori x3
Stand Alone x3
Spiked Armor x3

Book of the Dead Sacrifices

This is a no-minion build, so sacrifices are crucial:

Reapers (Skeletons) - Sacrifice for increased Shadow Damage.
Cold Mages - Sacrifice for +Vulnerable Damage.
Iron Golem - Sacrifice for +Critical Strike Damage.

Horadric Spells & Jewels

Best Combo:

Catalyst: Astral Pillar - A taunting totem that deals AoE Shadow Damage.
Infusion: Nebulous Extract - Converts Pillar damage into Shadow and adds Shadowblight procs.

Arcana:

Bloody Charm - Increased DoT.
Tranquil Stone - Adds Unstoppable.
Fractured Core - Nullifies Damage Resistance Auras.

Recommended Horadric Jewels:

Scornful Light - Increases Shadow Damage.
Elemental Brand - Boosts application rate of buy Diablo IV gold Shadow procs.
Cursed Brand - (Optional) Boosts Cursed enemies' debuffs.