Issue Description:

I can't get the ender heads even with empowered IV. I've tried with tinkers weapons and nothing...

I've tried with about 500 enderman and 0 heads.

Affected Versions ("):

• EnderIO: EnderIO-1.12.2-5.2.60
• EnderCore: EnderCore-1.12.2-0.5.76
• Minecraft: 1.12.2 Forge
• Forge: 1.12.2
• SpongeForge? Only Forge
• Optifine? yes
• Single Player and/or Server? Server