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The Treasure token is super useful just in case your opponents cards are of colors your lands cant produce

The mana cost limitation is definitely a factor that makes Boxing Ring seem like a low power option but consider that among three opponents you will have some options

Grab Umezawas Jitte and go ham, or put him in a tokens deck with Skullclamp and his floor becomes 2WW: Draw four cards and put a Skullclamp onto the battlefield. Finally

They are extensively knowledgeable on the intricacies of many competitive outlets, and are always looking for a new challenge in the gaming sphere.

If the creature gets killed, you lose