Cheapest priced copy (The List): $0.59 at Card Kingdom, near mint, their price list as of .
Fractured Powerstone 
Artifact · Common · March of the Machine Commander · #357
{T}: Add {C}.
{T}: Roll the planar die. Activate only as a sorcery.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
4 printings · $0.59 to $0.69 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| March of the Machine Commander | 357 | Common | $0.69 | — |
| Planechase 2012 | 111 | Common | $0.69 | — |
| Planechase Anthology | 111 | Common | $0.69 | — |
| The List | PC2-111 | Common | $0.59 | — |
2 rulings from Wizards of the Coast
- 1 June 2012In non-Planechase games, Fractured Powerstone's second ability will have no effect.
- 1 June 2012Rolling the planar die this way doesn't count when determining the cost of the special action of rolling the planar die. For example, if you roll the planar die twice in a turn, then activate Fractured Powerstone to roll it a third time, rolling the planar die again that turn will cost {2}.