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The problem with Battle of Wits is that when you consider you will need 200 cards in your deck once it hits the battlefield and that it might take several (or many) turns to get Battle of Wits on the battlefield, you will need to play somewhere around 240 cards to make Battle of Wits work, which means you're increasing your deck size by 300%, which in turn leads to a massive drop in consistency, to the point where Battle of Wits simply isn't worth the cost in competitive decks
You can then also spend either black and tap it to either exile an instant or sorcery to make your opponents lose two life, or green and tap it to exile a creature card from a graveyard to gain two life
Umori also comically won a constructed event I did involving a deck built around each companion and using the original rules
Tools like TCG Companion and Pokellector offer valuable assistance in tracking and managing your collection
Popular retro gaming account @supersparkster recently hosted a claim sale - where the seller posts a photo of a collectible and its price, and the first to comment claim wins the right to purchase it - and users claimed each $200+ item literal moments after each post went live