Expansion card questions: Hi, If i have 2 allies in play when i play karma to control a minion, should i discard an ally, in order to…

Yes—the minion targeted by Karma is specifically treated as an ally while Karma is in play, so it counts toward your ally limit. You’d need to discard one of your allies immediately upon choosing the minion. Note, it’s technically fine to discard the minion being treated as an ally for this effect.

-Alex