Darksteel Reactor vs Fellwar Stone
| Mana cost | ||
|---|---|---|
| Mana value | 4 | 2 |
| Type | Artifact | Artifact |
| Rarity | rare | uncommon |
| Prices | $0.31 | — |
| Rules text | Indestructible (Effects that say "destroy" don't destroy this artifact.) At the beginning of your upkeep, you may put a charge counter on this artifact. When this artifact has twenty or more charge counters on it, you win the game. | : Add one mana of any color that a land an opponent controls could produce. |