Boots

Tempering Priority: Evade Cooldown Reduction and Diablo 4 Items Soulrift Duration - helps you move more frequently and extend your main damage spell.
Masterwork Focus: Intelligence for damage scaling.
Ideal Stats: Aim for Movement Speed, Maximum Life, Essence Regen, and Ranks to Corpse Skills to boost resource generation and responsiveness during fights.

Amulet - Ebonpiercer

Tempering Priority: Increase Ranks to Reaper's Pursuit - this supports your overall mobility and synergy with the build's Shadow mechanics.
Masterwork Focus: Prioritize any effect that enables Blight projectiles to cast twice.
Ideal Stats: Look for +Ranks to Blight, Gloom, and Reaper's Pursuit, all of which scale your damage and shadow application directly.

Rings (x2)

Tempering Priority: Shadow Damage and Ultimate Cooldown Reduction - maximize uptime and efficiency of your shadow spells and elite abilities.
Masterwork Focus: Attack Speed to improve DPS and skill animation speed.
Ideal Stats: You'll want a blend of Critical Strike Chance, Lucky Hit Chance, and Chance to Make Enemies Vulnerable - all high-priority stats for maximizing DPS through procs and debuffs.

Weapon

Tempering Priority: You want Blight Projectiles to cast twice, as this dramatically increases area coverage and Shadowblight stacks.
Masterwork Focus: Any effect that helps restore Primary Resource keeps your rotation running smoothly.
Ideal Stats: Focus on Shadow Damage, Vulnerable Damage, Maximum Life, and ideally a % chance to Restore Essence or buy Diablo 4 gold similar resource-return mechanics.