Cheapest priced copy (Saviors of Kamigawa): $0.35 at Card Kingdom, near mint, their price list as of .
Inner Calm, Outer Strength 
Instant — Arcane · Common · Saviors of Kamigawa · #133
Target creature gets +X/+X until end of turn, where X is the number of cards in your hand.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Saviors of Kamigawa | 133 | Common | $0.35 | $0.99 |