@Moose-lawson202 Nice to see you around the Community. 👋🏽
There isn't technically a limit to the amount of additional artist/song seeds you can add as variety to any given station.
This being said, adding variety to a station doesn't narrow the song pool that Pandora chooses from, nor does it increase your chances of hearing a particular song or artist. Rather, it opens up your station to a lot of variety, which can make for some undesirable matches.
As a general rule, stations seem to work best with no more than 3-4 seeds added.
Hope this helps!
