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Energy Flux [Mercadian Masques]
| Set: | Mercadian Masques |
| Type: | Enchantment |
| Rarity: | Uncommon |
| Cost: | 2U |
| Colors: | U |
All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}."
Karn said nothing—he just grasped the powerstone and squeezed tightly. The wild flashing ceased.