Cheapest priced copy (The Brothers' War Retro Artifacts): $0.49 at Card Kingdom, near mint, their price list as of .
Runechanter's Pike 
Artifact — Equipment · Rare · Innistrad · #231
Equipped creature has first strike and gets +X/+0, where X is the number of instant and sorcery cards in your graveyard.
Equip {2}
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $0.49 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Brothers' War Retro Artifacts | 48 | Rare | $0.49 | $0.79Out of stock |
| The Brothers' War Retro Artifacts | 111 | Rare | $0.49 | $0.49 |
| The Brothers' War Retro Artifacts | 111z | Rare | — | — |
| Innistrad | 231 | Rare | $0.59 | $2.99 |
One ruling from Wizards of the Coast
- 22 September 2011The value of X is constantly updated as instant cards and sorcery cards are put into or removed from your graveyard.