Apothic Infinite (Apotheosis Unofficial Addon)

Absolutely check the Config(apo_inf-sever.toml). You can control the functionality of this mod to some extent; most settings will work by entering true or false.

Apothic Infinite

As the name suggests, this allows you to perform Reforging indefinitely, causing the effects to stack up and increasing the number of Gem sockets accordingly.
For example, it would look like this:

It also supports two mods that add unique rarities. (If there are other mods that do something similar, they probably won’t work, so please let me know in the comments.)