You can pick up new Yu-Gi-Oh cards on the official online shop
Trainer cards help you during your turn
Conveniently, this segues nicely into the next topic to talk about: how to get the most value out of your wildcards
Blue isnt really the color of land destruction, but it is certainly the color of messing up the color of mana that lands tap for
In the original, it seemed as if Rainbow Dark's destruction resistance was intentionally left out with this card, but it seems to have been kept in mind as a strategy in case of emergency because it has the effect of destroying the opponent's monsters by costing yourself and a cyber monster
If everything costs six mana, you're going to be way behind on playing creatures, and if everything costs two mana, you're going to get outclassed in the late game