To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of The Water Crystal's first ability)
If your Commander deck has two commanders, you can only include cards whose own color identities are also found in your commanders' combined color identities
Still on the subject of video game related card games, check out our review of Slay the Spire: The Board Game !
If you want to watch the announcement video, you can see everything for yourself here
Then all you need is a deck of 60 cards
Sara Bellum Head of Research FOIL C 153 Isabela Madrigal Perfectly in Control SR 153 Isabela Madrigal Perfectly in Control FOIL SR 154 Bruno Madrigal Oasis Oracle FOIL R 154 Bruno Madrigal Oasis Oracle R 155 Cinderella Resourceful Traveler R 155 Cinderella Resourceful Traveler FOIL R 156 Bruno Madrigal Seeing the Future C 156 Bruno Madrigal Seeing the Future FOIL C 157 Kida Discovering the Unknown R 157 Kida Discovering the Unknown FOIL R 158 Kashekim Wise King U 158 Kashekim Wise King FOIL U 159 Minnie Mouse Practical Traveler U 159 Minnie Mouse Practical Traveler FOIL U 160 Kida Crystal Scion L 160 Kida Crystal Scion FOIL L 161 Ursula Deal Maker L 161 Ursula Deal Maker FOIL L 162 Someone Will Lose His Head C 162 Someone Will Lose His Head FOIL C 163 What Else Can I Do