This is far too specific to include in something like a Commander deck, and theres infinitely better sideboard tech out there for other formats
When we returned to the plane (many years after the first visitboth for the plane and in the game), we also added elements influenced by Japanese pop culture
Being able to be such a disruptive one-unit army that forces opponents to interact with you on a different axis is fairly difficult, and there are a handful of games where Karn helps you interact with your opponent in exactly the right way by grabbing the artifact best-suited for the situation
Release date is 30th of August 2024
And like many Red cards in this oeuvre, (See Phoenixes and Hammer of Bogardan for examples), when the creature it enchants dies, you return this immediately to your hand for another go, giving you a solid aura that continues to turn any card you control into a major threat
You start at the bottom of the Bronze rank, with five other ranks you need to complete until you hit Mythic