Demonstration


Explanation
Adding a stack of enchanted Collars on the left of an Anvil, then adding a single high-enchanted "God Collar" to the right, applies all the good enchants to the stack of Collars on the left instead of a single one, for the cost of one, duping the enchants up to 63 times per enchant for free. Additionally, XP cost seems uncapped, and I'm not sure if this is intentional, making this slightly more abusive (as you can apply as many enchants at a time as you want if you can afford it).

Mod List:
domesticationinnovation-1.7.1-1.20.1.jar
citadel-2.4.9-1.20.1.jar

Embeddium + Oculus
ETF + EMF
Zoom Mod