Of course, we're playing Historic, so we don't have to worry about the literal Power Nine (well, minus Oracle of the Alpha), which means Karn's static ability is mostly strong in certain matchups (mostly against decks like Affinity and Artifact Ramp decks)
Sure, your designers had no idea what Commander was when they made you, and you did have your time in the limelight in Standard, but it's just so difficult not to wonder what would have happened if you, like your opposing cousinopposing cousin, had ended up with the "each opponent" wording instead of "target player"
Whoever came up with that amazing flavor text deserves a raise too
Your creation will be on display until the next LEGO Club
Some of these packs, depending on their rarity, can sell for around double online.
Still, its useful in all kinds of builds, especially if you can cheat it out or reanimate it