Strixhaven Stadium 
Text:
: Add {C}. Put a point counter on Strixhaven Stadium.Whenever a creature deals combat damage to you, remove a point counter from Strixhaven Stadium.Whenever a creature you control deals combat damage to an opponent, put a point counter on Strixhaven Stadium. Then if it has ten or more point counters on it, remove them all and that player loses the game.
Rulings:
Legality:
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standard: Not legal
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future: Not legal
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historic: Legal
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gladiator: Legal
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pioneer: Legal
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modern: Legal
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legacy: Legal
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pauper: Not legal
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vintage: Legal
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penny: Legal
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commander: Legal
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brawl: Not legal
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historicbrawl: Legal
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paupercommander: Not legal
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duel: Legal
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oldschool: Not legal
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premodern: Not legal
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alchemy: Not legal
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explorer: Legal
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predh: Not legal
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oathbreaker: Legal
Magic Online Promos #90326 (rare)
Strixhaven: School of Mages #259 (rare)
Strixhaven: School of Mages Promos #259p (rare)
