Geomancers are very strange and terrifying illagers that only spawn in the deepslate layer of the caves. They summon magical pillars to trap and explode you, which can be quite a dangerous combo.
They drop amethyst shards and amethyst dust.
They also drop the “Crystalline” armor trim 1/8th of the time if the armor trim addon is installed.

Look at those tattered clothes and ratty beard… he’s been down in the caves a while.
History
| 1.5.0 | * |
| |
|---|---|---|---|
| 1.3.0 | * | Iceologers and geomancers should have a harder time seeing you through walls now | |
| 1.1.1 | * | Updated geomancer pillars to using /damage, causing the following changes:
| |
| 1.1.0 | Beta 4 | * | Geomancers no longer drop echo shards when killed nearby sculk catalysts
Geomancers no longer drop budding amethyst
Now drop:
Geomancers’ spawning has been optimized The explosive geomancer pillar’s texture has been updated |
| Beta 4 | - | Geomancers no longer drop budding amethyst
Geomancers no longer drop echo shards when killed nearby sculk catalysts
| |
| Beta 3 | * | The geomancer pillar textures have been updated | |
| Beta 3 | * | Geomancers and iceologers can no longer see through glass, doors, or similar transparent blocks | |
| Beta 1 | + | Echo shards now drop from geomancers killed nearby a sculk catalyst, instead of their usual amethyst shard drop, making echo shards renewable Geomancers drop budding amethyst 2.5% of the time | |
| Beta 1 | - | Geomancers no longer drop deepslate | |
| 1.0.1 | * | Geomancer pillars now flash before exploding Amethyst dust now drops 100% of the time from geomancers in stacks of 1-2, and is affected by looting | |