Shadows of Abaddon Mod Wiki
Treasure Bag.gif
Fortune and glory, kid.
Expert Mode-Only Content: This information applies only to Expert mode and Expert mode worlds.
Arcanum of the Caster
Stack digit 1.png
Arcanum of the Caster inventory icon
Type Accessory
Tooltip 'You sacrifice everything to keep your magic powerful'
Using mana potions will apply 'Caster's Sacrifice' instead of Mana Sickness
'Caster's Sacrifice' stacks up to 5 and each stack increases mana usage by 20%
Inflicts debuff Caster's Sacrifice.png Caster's Sacrifice
Debuff duration 10 seconds
Debuff tooltip Doubled mana usage
Rarity Rarity Level: Shadowflare
Sell 30 Gold Coin.png
Dropped by
Entity Quantity Rate
Erazor 1 100%

The Arcanum of the Caster is a post-Moon Lord accessory that acts similar to the Mana Flower. However, instead of applying the Mana Sickness Debuff, it instead applies Caster's Sacrifice, which increases mana usage by 20%. This can stack up to 5 times.

It can only be obtained from Erazor's Treasure Bag on Expert Mode.


Expert mode items
Treasure Bag.gif Treasure Bag  • Frigid Pendant.png Frigid Pendant  • Pumpkin Amulet.png Pumpkin Amulet  • Flight Feather.png Flight Feather  • Jensen's Talisman.png Jensen's Talisman  • Royal Guard.png Royal Guard  • Primordial Core.png Primordial Core  • Forged Fury.png Forged Fury  • Serpent Sceptre.png Serpent Sceptre  • Blind Justice - Prototype 01.png Blind Justice - Prototype 01  • Asteroid Shower.png Asteroid Shower  • Star Scourge.png Star Scourge  • Cosmic Cloud Bracelet.png Cosmic Cloud Bracelet  • Lightning Rifle.png Lightning Rifle  • Arcanum of the Caster.png Arcanum of the Caster  • Yata Mirror.png Yata Mirror

Equipable Items: Asthraltite Breastplate.png Armor • Flight Feather.png Accessories ( Solar Sigil.png Combat) • Pandolar Mask.png Vanity