Ars Al'Diabolos

Ars Al'Diabolos is a Unique Blasphemous Grimoire in Diablo 2 Resurrected: Reign of the Warlock. This Warlock-only off-hand boosts Chaos spell power and casting speed while adding Fire scaling and defensive utility, making it a strong endgame Grimoire for aggressive caster builds.

Stats and Properties

Blasphemous Grimoire
Defense: 402–447
Chance to Block: 37%
Durability: 20
Required Strength: 106
Required Level: 80
15% Chance to cast Level 1 Terror when struck
+2 to Chaos Skills (Warlock Only)
+25% Faster Cast Rate
15–25% to Fire Skill Damage
+3–5 to Apocalypse (Warlock Only)
170–200% Enhanced Defense
Fire Resist +20–30%
5–10 to Mana after each Kill
+5–10 to Light Radius

Rarity: Unique Item

Item Details

– Warlock-only Blasphemous Grimoire introduced in D2R Reign of the Warlock
– +2 to Chaos Skills strengthens core Chaos damage and scaling
– 25% Faster Cast Rate improves spell tempo and breakpoint support
– 15–25% Fire Skill Damage boosts Fire-based damage scaling and hybrid setups
– +3–5 to Apocalypse adds major power to Apocalypse-focused builds
– Enhanced Defense and Fire Resist improve survivability in Hell content
– Terror when struck provides disruption under close-range pressure
– Mana after each Kill helps sustain fast clearing and repeated casting