The color matters theme wanted to reward multicolor, not punish it (although yes, there are a few exceptions)
What's more, it's relatively cheap at three Ink and can even be added to the Inkwell itself
Final Fantasy Mono-Color Saga Creatures These cards are all multifaceted and have a built in way to exile, return as a saga, then exile and return on the front side
Finally, Faunsbane Troll and Royal Treatment seem like very harmonious fits for the sideboard
There have been tons of cards printed worth adding to the Cube between then and now that would lead to other changes, and honestly I kind of like the idea of really powering down the Cube with how many versions of powered Cubes weve seen on MTGO lately, but those were the two huge misses from my perspective at the time
These known cards are sure to excite players of the TCG and Sonic fans, but there could still be more to look out for