A Simple datapack I made because Apotheosis Mob farms are OVERPOWERED.
This globally disables standard mob drops. Via the Gem_Entity_Drops loot modifiers. Invaders still can drop gems and Normal mobs can still drop affixed equipment, But normal mobs no longer drop gems. This Heavily nerfs mob farms with high entity yields.
Personally I made this to nerf the Silverfish farms offered by Create.

