Issue description:
First of all! Attacking to fast with rapier can somehow cause this crash when hitting nether mobs. https://paste.dimdev.org/fojotaneva.mccrash I have no idea why that is a thing.
Also strangely this even happens with just tinkers and any mod that adds Shocking materials like Electrum or Embers etc. The modifier recharges nearly instantly after it got discharged making it a free super dmg on any weapon. What happened to needing to walk around with the tool to build up static charge?

If crashed, link to crash report (use a site such as pastebin):
https://paste.dimdev.org/fojotaneva.mccrash

Versions:

• Minecraft: 1.12.2
• Forge: 1.12.2 14.23.5.2847
• Mantle: Mantle-1.12-1.3.3.55.jar
• Tinkers Construct: TConstruct-1.12.2-2.12.0.157.jar

Can it be reproduced with just Tinkers Construct? If not, list the other mods required to reproduce the issue.

Modlist in the crash report

Your crash is a duplicate of #3783.

Please open a separate ticket for the electron issue, it's difficult to handle multiple issues in one issue. Also, when it asks for mods needed to reporduce, that is a minimal mod list, not a full mod list. Should not have any more than 5. Verify the electron issue happens with just tinkers and a mod that adds electron.