I think you should do more research onto the IMX and GODS token before you try to invest into them. I'd say you should be buying cards if you actually enjoy the game (and you probably would as a MTG player) and ignore the IMX and GODS token for now. If you play, you will earn GODS anyway, so no need to worry too much about GODS.

As for the cards, I think the first thing you need to do is to find the god you like, or an archetype you like. Or maybe share your favorite deck or archetype in MTG and I can see if there's something close to it here -- if it's combo, you are out of luck.