Arcane Catalyst
Arcane Catalyst is an Apotheosis gem (fallen_gems_affixes:compat/arcane_catalyst). Gems go into sockets on gear and give a bonus that depends on the gem’s rarity and the kind of item it is socketed in; Gems explains sockets and the notation in the table.
Bonuses#
It fits in boots, bows, chestplates, crossbows, staffs, swords and tridents.
| Socketed in | Rare | Epic | Mythic | Ancient |
|---|---|---|---|---|
| Staffs | +2.5% Evocation Spell Power | +5% Evocation Spell Power | +7.5% Evocation Spell Power | +10% Evocation Spell Power |
| Boots | On spell damage, inflict Rend (00:06) [⌛ 00:25] | On spell damage, inflict Rend II (00:09) [⌛ 00:25] | On spell damage, inflict Rend III (00:12) [⌛ 00:25] | On spell damage, inflict Rend IV (00:15) [⌛ 00:25] |
| Chestplates | +10% Evocation Magic Resistance | +12.5% Evocation Magic Resistance | +15% Evocation Magic Resistance | +20% Evocation Magic Resistance |
| Ranged Weapons | Gain Lingering Strain [∞] | Gain Lingering Strain II [∞] | Gain Lingering Strain III [∞] | Gain Lingering Strain IV [∞] |
| Light Weapons | +1 Ashen Breath | +2 Ashen Breath | +3 Ashen Breath | +4 Ashen Breath |
Obtaining#
It is one of the random gems, in every dimension. Random gems drop from hostile mobs killed by a player (8% of kills, 58% for bosses) and appear in chests (25% of vanilla chests, 20% of other chests). Its drop weight is 10, which makes it about 2.2% of random gems in the Overworld, the Nether and the End (before Luck). It drops as Rare in the Overworld, Rare–Epic in the Nether, Rare–Mythic in the End and Rare in the Otherside, and as any rarity from Rare to Ancient elsewhere.
The Gem Cutting Table raises a gem one rarity at a time, up to Ancient.