Lair of the Hydra
When Lair of the Hydra is in play. I try to pay the cost for X in the exact amount of mana I have plus the land itself. If I have 5 mana and Lair of the Hydra and I accidentally put X=6 I get this popup. Whereas if I make X= 7 or more I get the cancel option and have to put in a new cost for X.
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Goldie White#39937
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