Cheapest priced copy (Fourth Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Energy Flux 
Enchantment · Uncommon · Mercadian Masques · #78
All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {2}."
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
13 printings · $0.35 to $19.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Revised Edition | 57 | Uncommon | $0.39 | — |
| Fourth Edition Foreign Black Border | 68 | Uncommon | — | — |
| Fourth Edition | 68 | Uncommon | $0.35 | — |
| Fifth Edition | 83 | Uncommon | $0.39 | — |
| Antiquities | 9 | Uncommon | $8.99 | — |
| Foreign Black Border | 57 | Uncommon | — | — |
| Introductory Two-Player Set | 8 | Uncommon | — | — |
| Mystery Booster 2 | 161 | Uncommon | $0.39 | $10.99 |
| Mercadian Masques | 78 | Uncommon | $0.49 | $19.99 |
| The List | MMQ-78 | Uncommon | $0.39 | — |
| Rivals Quick Start Set | 8 | Uncommon | — | — |
| Summer Magic / Edgar | 57 | Uncommon | — | — |
| World Championship Decks 2000 | nl78sb | Uncommon | $0.79 | — |