Rainbow stairwell is very constructed about how you create your deck, which makes the deck building more interesting.
your deck has the following rules
- Exactly 60 cards
- 6 cards from each color and 6 cards that are colorless
- One of each card maximum
- You must have 1 of each CMC on each color going from 1 to 6
- So CMC and color or lack of it is already set for 30 cards out of 60. Leaving you the rest for mana base and chance to add some CMC’s twice.
read more
https://mtg.gamepedia.com/Rainbow_Stairwell
Which color stairwell do you think is the most important?
Green for mana fix or perhaps blue for card advantage?
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