This kinda feel like a worse rock paper scissor. I think you could have a good game there but you'd need to be able to build your own deck so that both players don't have the same pool of card and there is a reason to think about what mode you're selecting.
Currently you have no information on what your opponent will do so the mode selection is purely random except when you get an effect with a mode in which case you have no reason not to select it because your opponent can't know you've drawn that card.