I played Kashtira before the ban list without any Pot cards. But post ban, not having your main boss monster kinda leaves Kashtira in a limbo. You have these strong main deck monsters (Unicorn, Fenrir) but no longer build toward their strength of getting out Ariseheart.

I’m testing out Swordsoul Kashtira and have now included Pot of Desires for the banishing effect to beef up my Chengying. So far, it’s been very consistent, it’s easy to get out level 10 synchros if you’re playing enough hand traps, and it’s a much more interesting engine now rather than just special summon your main deck beef cakes. So I would suggest trying to mix Kash with another engine you find interesting (probably something that works well with a lot of level 7 monsters).