It can have different colors than your commander creature, and your color identity is determined by the color pips on both your choose a background commander creature and your commander background
Going forward, each Standard set will have a supplemental Alchemy set of around 30 cards that will be available about a month after the main set releases
Estinien Varlineau's first ability resolves before the spell that caused it to trigger
The deck's alternate commanders are Minn, Gnome Illusionist and Nihiloor
Another form is control, and Land Destruction is one of the best ways to do that
You can expect a review of how the mechanics have played out, which cards to look for in each archetype, overrated cards, underrated cards, and more