Curator of Destinies The color pie has always been a core part of the game
If it matters, it's printed on the card
You must have no cards in your hand to activate and to resolve this effect
Of course, this card was introduced long before Commander was created, but due to the prevalence of mana rocks and various token types (specifically Treasures, Food and Clues) in the format, it can truly sing in a Treefolk build facing off against an artifact-heavy pod (which is most of them)

Barkshell Blessing Boartusk Liege Boggart Ram-Gang Crabapple Cohort Dawnglow Infusion Deus of Calamity Devoted Druid Dramatic Entrance Drove of Elves Elvish Hexhunter Farhaven Elf Firespout Flourishing Defenses Fossil Find Foxfire Oak Fracturing Gust Giantbaiting Gleeful Sabotage Gloomwidow Gloomwidow's Feast Guttural Response Heartmender Howl of the Night Pack Hungry Spriggan Impromptu Raid Juvenile Gloomwidow Kitchen Finks Loamdragger Giant Mana Reflection Manamorphose Medicine Runner Mercy Killing Morselhoarder Mossbridge Troll Mudbrawler Raiders Nurturer Initiate Old Ghastbark Oracle of Nectars Oversoul of Dusk Presence of Gond Prismatic Omen Raking Canopy Raven's Run Dragoon Reaper King Reknit Rhys the Redeemed Rosheen Meanderer Roughshod Mentor Runes of the Deus Safehold Duo Safehold Elite Safewright Quest Scuzzback Marauders Scuzzback Scrapper Seedcradle Witch Shield of the Oversoul Spawnwrithe Tattermunge Duo Tattermunge Maniac Tattermunge Witch Toil to Renown Tower Above Valleymaker Vexing Shusher Viridescent Wisps Wheel of Sun and Moon Wildslayer Elves Wilt-Leaf Cavaliers Wilt-Leaf Liege Witherscale Wurm Woodfall Primus Wort, the Raidmother

IMPORTANT : All the stacks are being passed simultaneously