Cheapest priced copy (The Dark): $0.35 at Card Kingdom, near mint, their price list as of .
War Barge 
Artifact · Uncommon · The Dark · #115
{3}: Target creature gains islandwalk until end of turn. When this artifact leaves the battlefield this turn, destroy that creature. A creature destroyed this way can't be regenerated. (A creature with islandwalk can't be blocked as long as defending player controls an Island.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Dark | 115 | Uncommon | $0.35 | — |
| Time Spiral Timeshifted | 116 | Special | $0.35 | $0.79 |