Cheapest priced copy (Betrayers of Kamigawa): $0.49 at Card Kingdom, near mint, their price list as of .
Baku Altar 
Artifact · Rare · Betrayers of Kamigawa · #152
Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this artifact.
{2}, {T}, Remove a ki counter from this artifact: Create a 1/1 colorless Spirit creature token.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.49 to $3.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Betrayers of Kamigawa | 152 | Rare | $0.49 | $3.99 |