Crafting

Deterministic craft reference: pick a base and an item level to see exactly which prefix and suffix tiers can roll. Straight from the game's mod data.

The game data does not carry modifier weights, so this page does not print chances. It lists what can roll and from which item level, with tiers counted the game's way: T1 is the best.

Desecration

Desecrated modifiers, grouped by the Abyssal lich whose mark they carry. Abyssal bones offer picks from these pools.

Amanamu(2)
Projectiles deal (20-30)% increased Damage with Hits against Enemies within 2m
Prefixes · ilvl 65
Projectiles have (18-26)% increased Critical Damage Bonus against Enemies within 2m
Suffixes · ilvl 65
Kurgal(3)
Projectiles deal (20-30)% increased Damage with Hits against Enemies further than 6m
Prefixes · ilvl 65
(6-10)% increased Mana Cost Efficiency
Suffixes · ilvl 65
Projectiles have (18-26)% increased Critical Hit Chance against Enemies further than 6m
Suffixes · ilvl 65
Ulaman(3)
Increases and Reductions to Projectile Speed also apply to Damage with Bows
Prefixes · ilvl 65
(10-14)% of Skill Mana Costs Converted to Life Costs
Suffixes · ilvl 65
Projectile Attacks have a (8-12)% chance to fire two additional Projectiles while moving
Suffixes · ilvl 65
Abyssal bones(12)

What each bone desecrates, in the game's own words.

Gnawed Jawbone
Desecrates a Rare Weapon or Quiver
Preserved Jawbone
Desecrates a Rare Weapon or Quiver
Ancient Jawbone
Desecrates a Rare Weapon or Quiver
Gnawed Rib
Desecrates a Rare Armour
Preserved Rib
Desecrates a Rare Armour
Ancient Rib
Desecrates a Rare Armour
Gnawed Collarbone
Desecrates a Rare Amulet, Ring or Belt
Preserved Collarbone
Desecrates a Rare Amulet, Ring or Belt
Ancient Collarbone
Desecrates a Rare Amulet, Ring or Belt
Preserved Cranium
Desecrates a Rare Jewel
Preserved Vertebrae
Desecrates a Rare Waystone
Altered Collarbone
Desecrates a Rare Amulet, Ring or Belt with a chance for otherworldly modifiers

Essences

What each essence guarantees on each kind of equipment, in the game's own lines.

Essences(7)
Greater Essence of Battle
Upgrades a Magic item to a Rare item, adding a guaranteed modifier
+(237-346) to Accuracy Rating
Essence of Hysteria
Removes a random modifier and augments a Rare item with a new guaranteed modifier
(43-50)% increased Damage with Bow Skills
Essence of the Abyss
Removes a random modifier and augments a Rare item with a new guaranteed modifier
Mark of the Abyssal Lord
Lesser Essence of the Infinite
Upgrades a Magic item to a Rare item, adding a guaranteed modifier
+(9-12) to Strength, Dexterity or Intelligence
Essence of the Infinite
Upgrades a Magic item to a Rare item, adding a guaranteed modifier
+(17-20) to Strength, Dexterity or Intelligence
Greater Essence of the Infinite
Upgrades a Magic item to a Rare item, adding a guaranteed modifier
+(25-27) to Strength, Dexterity or Intelligence
Mystic Alloy
Removes a random modifier and augments a Rare item with a new guaranteed modifier
(25-35)% chance to Chain an additional time

Corruption

Corrupting an item with a Vaal Orb is unpredictable: it can change nothing but the corrupted mark, and it can add one corrupted implicit from the pools below. A corrupted item cannot be crafted on any further.

Quivers(9)
(15-20)% increased Critical Damage Bonus
(20-30)% chance to Pierce an Enemy
(20-30)% increased Damage
(4-6)% increased Skill Speed
+(20-25) to maximum Mana
+(50-100) to Accuracy Rating
Gain (10-15) Mana per enemy killed
Gain (20-25) Life per enemy killed
Projectiles have (10-20)% chance to Chain an additional time from terrain