iI have the same problem, I manually tap green, white and black mana, and I have only the "cancel" or "2B" choice. If I cancel, it's... cancelled, and if I tap 2B, the spell fizzle on a non creature target. The lack of "green/white option" when you tap the right manas is a bug
Bug occurred when I have the artefact "Lantern" who give the any color capacity to all your lands.
iI have the same problem, I manually tap green, white and black mana, and I have only the "cancel" or "2B" choice. If I cancel, it's... cancelled, and if I tap 2B, the spell fizzle on a non creature target. The lack of "green/white option" when you tap the right manas is a bug
Bug occurred when I have the artefact "Lantern" who give the any color capacity to all your lands.
And no, Blood moon wasn't on the board ;)