11/24/2014 |
A face-down creature has a mana value of 0. However, its mana value changes when it's turned face up. Thus, if a creature is turned face up in response to being targeted by Noxious Dragon's ability, it may become an illegal target. |
11/10/2020 |
If a creature on the battlefield has in its mana cost, X is considered to be 0. |
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