Is your feature request related to a problem? Please describe.
Not really a problem but having multiple different ingredients would allow this to be a more customizable end game item than it already is.

Describe the solution you'd like
I'm not gonna ask for infinite amount cause that's crazy. Up to 4 different ingredients would work great since there are already 4 ingredient slots. Keeping the multiplier to be overall would be fine but having individual multipliers would be sick.

Describe alternatives you've considered
First idea that came to mind but feels like it would be the "easiest" to implement as there is already some foundation for this idea like the 4 ingredient slots.

Additional context
No additional context.

That's basicly the plan for the next update.
Plan is to support multiple items, with different worth, as payment items

Multiple payment items now possible with newest beta update
Curseforge