Incorrect rules interactions - THE END card should cost 2 but it is not working as expected
Hello, as you can see from the image attached to my report, I was playing the card "THE END" ("La Fine" in Italian), which, since I had less than 5 life points remaining (I had 2), should have cost only two black mana. The system correctly highlighted the card with the blue border, and I double-clicked on it. The two mana were automatically tapped, and the spell was cast, but it got stuck saying "Action cannot be completed due to an impossible cost to pay," and the only available action was to cancel. While the card was in my hand, it correctly displayed the cost as two black mana, but when I cast it, the cost changed to 2 black and 2 colorless, which is clearly a bug.
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Rezzahan#77802 commented
Terror of the Peaks imparts an additional cost on your spell when you target it. That cost is "pay 3 life" which you do not have and so cannot pay.