Essentially, this MTG Avatar The Last Airbender creature card is a Blood Moon on a stick, turning all non-basic lands into mountains which can only tap for red mana
In fact, I think that influence might already be showing its face in legends were seeing in the most recent sets, with legends that are much more niche and specialized: Compare to previous newer designs that were value-engines that rewarded players for just playing Magic: Past and Future But as we eagerly await these cool, new niche designs to roll out in the coming years, its a good idea to remember legendary creatures from Magics past, especially those from before WotC began to focus so much on Commander
Cards like Azami, Lady of Scrolls, Naban, Dean of Iteration, and the aforementioned Naru Meha, Master Wizard are just a few examples that synergize very well with Derevis talents, each setting you up to quickly race far ahead of your opponents in different ways
In official tournament settings (sanctioned DCI events), proxy cards are not permitted