Mob Champions

Evidence

Ran on Kiln's test stand (2026-11-04): MobChampionsFabric did not start: java.lang.NoSuchFieldError: Class net.minecraft.core.registries.BuiltInRegistries does not have member field 'net.minecraft.core.Registry MOB_EFFECT'; MobChampionsClientFabric did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

• Mixin
• io.netty.buffer.ByteBuf
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.Context
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.PlayPayloadHandler
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.minecraft.client.particle.FireworkParticles
• net.minecraft.client.particle.FireworkParticles.Starter
• net.minecraft.client.particle.ParticleEngine
• net.minecraft.core.component.DataComponents
• net.minecraft.core.particles.ColorParticleOption
• net.minecraft.core.particles.ParticleTypes
• net.minecraft.nbt.CompoundTag
• net.minecraft.network.FriendlyByteBuf
• net.minecraft.network.codec.ByteBufCodecs
• net.minecraft.network.codec.StreamCodec
• net.minecraft.network.protocol.common.custom.CustomPacketPayload
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.TypeAndCodec
• net.minecraft.server.MinecraftServer
• net.minecraft.server.ReloadableServerRegistries
• net.minecraft.server.ReloadableServerRegistries.Holder
• net.minecraft.world.DifficultyInstance
• net.minecraft.world.effect.MobEffect
• net.minecraft.world.effect.MobEffectCategory
• net.minecraft.world.effect.MobEffectInstance
• net.minecraft.world.effect.MobEffects
• net.minecraft.world.entity.EntitySpawnReason
• net.minecraft.world.entity.EquipmentSlot
• net.minecraft.world.entity.Mob
• net.minecraft.world.entity.ai.attributes.AttributeModifier
• net.minecraft.world.entity.ai.attributes.AttributeModifier.Operation
• net.minecraft.world.item.ShieldItem
• net.minecraft.world.item.component.FireworkExplosion
• net.minecraft.world.item.component.FireworkExplosion.Shape
• net.minecraft.world.item.enchantment.EnchantmentHelper
• net.minecraft.world.item.enchantment.providers.VanillaEnchantmentProviders
• net.minecraft.world.item.equipment.Equippable
• net.minecraft.world.level.ServerLevelAccessor
• net.minecraft.world.level.storage.ValueInput
• net.minecraft.world.level.storage.ValueOutput
• and 28 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

Mob champions are special elite versions of regular mobs that spawn with armor, weapons, enhanced stats and effects. Legendary loot!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file mobchampions-26.3-fabric-1.0.2.1-FABRIC.jar. The scan reads the mod's classes; it does not run them.