Primevals glorious rebirth bug
Primeval’s glorious rebirth doesn’t always allow you to cast it even though you have the mana to do so and it’s infuriating considering it happens at the time when you need it the most. It’s 7 mana total. 1 black, 1 white, 5 of any. That’s what I had and it still wouldn’t let me cast. As you can see from screenshots I had 1 white, 1 black, and a total of 7 untapped mana but I wasn’t able to cast it.
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Rezzahan#77802 commented
Legendary sorceries require you to have a legendary creature or planeswalker on the field to cast them.
205.4e Any instant or sorcery spell with the supertype “legendary” is subject to a casting restriction.
A player can’t cast a legendary instant or sorcery spell unless that player controls a legendary
creature or a legendary planeswalker.