I say the best combat strategy is to play the most pills for the character you think is the best. One you think might be the strongest or might have the best ability. Feel free to tell me in the comments what your best combat strategy is. If I can, I'll try it.
My very simple strategy is to KO as quickly as possible. Please teach me how to play im not anywhere near your level. Seriously dude. Tell me your deck via PM and i will tell u the best way how to use it. I can also do pratice battles with you so you can get warmed up