Archenemy is a totally optional opt-in way to play Commander, and the decks work completely fine outside of Archenemy
Collecting the rarest cards can be fun, and each booster pack contains a mix of different rarities, with Enchanted cards being the most difficult to find
The Aetherworks Plane: Kaladesh Whenever a non-token creature deals combat damage to a player, that creatures controller creates X 1/1 colorless Servo artifact creature tokens, where X is that creatures power
The prices of cards fluctuate based on the markets demand for them
Amber and Amethyst likes to quest early and often. Emerald and Ruby is especially good at delaying your opponents progress early on. Sapphire and Steel is great at quickly increasing the amount of ink in your inkwell. Those descriptions from the quick-start rules for each deck proved true
Out of all the cards on this list, Tishana, Voice of Thunder is the one Im least sure about, but as with Rowdy Crew, its too powerful not to mention