Each of the basic lands in the set are double-faced cards, giving you the choice of displaying dinosaurs before and after they break free
They're also only looking for the elven and dwarven rings, telling Reddit "900 is just a daunting number of cards to track"
Supported by excellent mana fixing, it also includes all the Commander staples you'd expect from a deck that include anything
Its the Draconic Destruction deck led by Atarka, World RenderAtarka, World Render
Zabaz, the Glimmerwasp WotC gave us a commander for all these modular creatures in Modern Horizons 2 in the form of Zabaz, the Glimmerwasp
Together with Ajani, Nacatl Pariah, these form the trifecta of absolutely unfair cheap white creatures from Modern Horizons 3 (honorable shoutout to Phelia, Exuberant Shepherd)