Cheapest priced copy (Kamigawa: Neon Dynasty): $0.49 at Card Kingdom, near mint, their price list as of .
Kyodai, Soul of Kamigawa 
Legendary Creature — Dragon Spirit · 3/3 · Rare · Kamigawa: Neon Dynasty · #438
Flash
Flying
When Kyodai enters, another target permanent gains indestructible for as long as you control Kyodai.
{W}{U}{B}{R}{G}: Kyodai gets +5/+5 until end of turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Kamigawa: Neon Dynasty | 23 | Rare | $0.49 | $0.49 |
| Kamigawa: Neon Dynasty | 407 | Rare | $1.29 | $1.99 |
| Kamigawa: Neon Dynasty | 438 | Rare | $0.59 | $0.49 |
| Kamigawa: Neon Dynasty Promos | 23p | Rare | $0.49 | $2.49 |
| Kamigawa: Neon Dynasty Promos | 23s | Rare | — | $0.59 |