Black isn't bad, either, creatures with Regeneration are really useful, and black has the most/cheapest by a longshot.Good creatures for their cost (both in gold and mana), and Protection from Green is exceptionally rare. Green isn't a terrible first choice for a deck.If you have experience with limited formats (Sealed, Draft, Cubes), you'll probably be better at this game than if you didn't. These tips assume you know how to play MtG.If you accidentally cancel out of an opportunity to trade amulets for cards, you won't be able to go back in until the next time it shows up, so make sure you're actually done before you click.Both in case of a shop having a rare card that you want, and so that you have some money to pay off an enemy if the ante is something you really like in exchange for hot garbage. Keep a couple hundred in gold on you at all times, if you can.All else being equal, blue is probably the hardest faction to fight.Avoid black if you main white in the early game, one of the enemies for the faction loves creatures with Protection from White.Different villages sell different colors of cards, so make that a factor in deciding where to do quests/fight enemies.For example, if your main deck is red/black aggro, you may want your secondary to be white/blue life gain+control.
Certain dungeons will shit all over a specific color or strategy, so it pays to branch out.