| 7/23/2021 |
An artifact's mana value is determined solely by the mana symbols printed in its upper right corner (unless that artifact is copying something else; see below). If its mana cost includes  , X is considered to be 0. If it has no mana symbols in its upper right corner (because it's an animated land that's also an artifact, for example), its mana value is 0. Ignore any alternative costs or additional costs (such as kicker) paid when the artifact spell was cast. |
| 7/23/2021 |
A token has a mana value of 0 unless it's copying something else. |
| 7/23/2021 |
If an artifact is copying something else, its mana value is the mana value of whatever it's copying. |
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