In many ways the Power 9 is the creative freedom and experimental design of the early days of MTG
You can get some pretty sweet, limited edition skins, though - for example, if you bought the 'Warhammer Bundle' during the October 2023 Warhammer 40k Secret Lair, you got two codes, each good for ten premium card sleeves showing the 40k-ified versions of classic cards: Merciless Executioner as "Ork Kommando" Aggravated Assault Krenko, Tin Street Kingpin as "Makari the Lucky Grot" Zurgo Helmsmasher as "Ghazghkull, Prophet of the Waaagh!" Blind Obedience Danitha Capashen, Paragon as "Neave Blacktalon" Najeela, the Blade-Blossom as "Archaeon the Everchosen" Scourge of the Throne as "Stardrake" Beware, though - this is often the priciest way to find new codes
What makes it so valuable and popular
(4/12/2024) If Cactus Preserve becomes a creature but you haven't controlled it continuously since your most recent turn began, you won't be able to activate its mana ability or attack with it that turn
I primarily tested against the Colorless version, but also got in some games against UR
