Mythic Upgrades

Evidence

Ran on Kiln's test stand (2026-11-04): MythicUpgrades did not start: java.lang.NoClassDefFoundError: net/minecraft/world/effect/MobEffect.

What it needs from Kiln

• an access widener
• Mixin
• net.fabricmc.fabric.api.biome.v1.BiomeModifications
• net.fabricmc.fabric.api.biome.v1.BiomeSelectors
• net.minecraft.core.HolderGetter
• net.minecraft.core.HolderSet
• net.minecraft.core.HolderSet.Named
• net.minecraft.core.RegistrationInfo
• net.minecraft.core.WritableRegistry
• net.minecraft.core.component.DataComponents
• net.minecraft.core.particles.DustParticleOptions
• net.minecraft.data.worldgen.BootstrapContext
• net.minecraft.tags.BlockTags
• net.minecraft.tags.TagKey
• net.minecraft.util.Util
• net.minecraft.util.random.WeightedList
• net.minecraft.util.random.WeightedList.Builder
• net.minecraft.util.valueproviders.UniformInt
• net.minecraft.world.effect.MobEffect
• net.minecraft.world.effect.MobEffectCategory
• net.minecraft.world.effect.MobEffectInstance
• net.minecraft.world.effect.MobEffects
• net.minecraft.world.entity.ai.attributes.AttributeMap
• net.minecraft.world.entity.ai.attributes.AttributeModifier
• net.minecraft.world.entity.ai.attributes.AttributeModifier.Operation
• net.minecraft.world.food.FoodProperties
• net.minecraft.world.food.FoodProperties.Builder
• net.minecraft.world.item.CreativeModeTab.Builder
• net.minecraft.world.item.CreativeModeTab.DisplayItemsGenerator
• net.minecraft.world.item.CreativeModeTab.ItemDisplayParameters
• net.minecraft.world.item.CreativeModeTab.Output
• net.minecraft.world.item.CreativeModeTab.Row
• net.minecraft.world.item.SmithingTemplateItem
• net.minecraft.world.item.ToolMaterial
• net.minecraft.world.item.alchemy.Potion
• net.minecraft.world.item.alchemy.PotionContents
• net.minecraft.world.item.component.Consumable
• net.minecraft.world.item.component.Consumable.Builder
• net.minecraft.world.item.component.Consumables
• net.minecraft.world.item.consume_effects.ApplyStatusEffectsConsumeEffect
• net.minecraft.world.item.equipment.ArmorMaterial
• net.minecraft.world.item.equipment.ArmorType
• and 78 more

On the roadmap: Code next to data (0.3), Mixin (0.5)

In the author's words

Mythic Upgrades adds new mythic crystals & gems to the game! Explore new cave biomes, upgrade your netherite gear or brew new potions!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file mythicupgrades-fabric-26.3-5.1.1.jar. The scan reads the mod's classes; it does not run them.