Cheapest priced copy (Champions of Kamigawa): $0.79 at Card Kingdom, near mint, their price list as of .
Long-Forgotten Gohei 
Artifact · Rare · Modern Masters 2015 · #221
Arcane spells you cast cost {1} less to cast.
Spirit creatures you control get +1/+1.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.79 to $4.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Champions of Kamigawa | 261 | Rare | $0.79 | $4.99 |
| Modern Masters 2015 | 221 | Rare | $0.99 | $1.49 |
One ruling from Wizards of the Coast
- 1 December 2004The cost reduction applies to the total cost of the Arcane spell, including any additional costs from cards spliced onto it. However, the cost reduction applies only once to each Arcane spell. For example, if you cast an Arcane spell with mana cost {R} and splice onto it a card whose splice cost is {1}{U}, then the spell costs {U}{R} to cast. If you cast an Arcane spell with mana cost {4}{U} and splice onto it a card whose splice cost is {1}{R}, the spell costs {4}{U}{R} to cast.