Agatha’s soul cauldron and phyrexian mana
Agatha’s soul cauldron enables you to pay mana of any color to activate abilities. When paired with a card like Unctus, which has a phyrexian mana ability, the UI usually prompts you to select whether you’d like to pay with life or mana, except the option for paying with life disappears and leaves only {1} as an option.
I play on mobile, so am unsure if this applies to other platforms
![](https://secure.gravatar.com/avatar/405abc2f27ae825d54395a0056014650?size=40&default=https%3A%2F%2Fassets.uvcdn.com%2Fpkg%2Fadmin%2Ficons%2Fuser_70-6bcf9e08938533adb9bac95c3e487cb2a6d4a32f890ca6fdc82e3072e0ea0368.png)
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Sunborn Dragon#95701 commented
Its even more fun when a counter is on a permanent that had the ability anyway, and you suddenly can't pay its normal costs because it has a new broken instance of the ability. i am also playing on mobile. experienced the same issue granting captive wierd the abilites of captive wierd