Go-Shintai of Life's Origin is arguably one of the best commanders for this theme, but Tatsunari, Toad Rider and Tuvasa the Sunlit are close
Each crystal is assigned a specific Magic mana color: The Earth Crystal - green The Fire Crystal - red The Water Crystal - blue The Wind Crystal - white While each crystal results in a -1 decrease to spell-casting cost, one has its own unique effects and costs associated with playing them, as can be seen in the cards above
Because these boxes are so expensive traditionally, there are some alternative places that actually offer some staggering discounts
At the same time, Ruby Sapphires board presence might already be too much to deal with by the time youre playing this
With other options in Amethyst that allow you to order your cards, giving you exactly what you need, in conjunction with this setup, you get two lore from questing and can potentially pull the perfect card for your next turn
The card rules text should be exactly the same as the originals (unless there are errata)