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Thats a disturbing flavor fail though since splitting a centaur in half doesnt exactly mean you get a live elf and a live horses body ewwwwww

Equipment can help out, and Pirate's Cutless is the most obvious example, since it can snap onto a friendly Pirate when it enters the battlefield

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I wouldn't say it's conclusive evidence, especially since we still don't know the relation between the Elder Dragon War and Bolas' ascension, but it does put the Elders in a time bracket prior to that of the Primevals