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Rulings
If you must sacrifice a creature to pay a casting or activation cost that also includes mana, such as that of Bubbling Cauldron's abilities, you may put a -0/-1 counter on Wall of Roots to make its toughness 0 and then sacrifice it to pay that cost.
Rulings
If you must sacrifice a creature to pay a casting or activation cost that also includes mana, such as that of Bubbling Cauldron's abilities, you may put a -0/-1 counter on Wall of Roots to make its toughness 0 and then sacrifice it to pay that cost.
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