If you can, you just have to put a mod that is shareable, but they only put things to create the soul of eternity, making it longer

This isn't the problem I came here to report but for me, they work together, but Mutant doesn't sell Calamity boss summon items.

i mean like its not consumable right? so just craft in and you can use it more than once..

they can be played together, they just dont sell Calamity related items. tho just a heads up, im pretty sure the Fargos Souls will break things if paired with Calamity Infernum mode