Cheapest priced copy (Kamigawa: Neon Dynasty): $0.79 at Card Kingdom, near mint, their price list as of .
Thundering Raiju 
Creature — Spirit · 3/3 · Rare · Kamigawa: Neon Dynasty · #389
Haste
Whenever this creature attacks, put a +1/+1 counter on target creature you control. Then this creature deals X damage to each opponent, where X is the number of modified creatures you control other than this creature. (Equipment, Auras you control, and counters are modifications.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $3.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Kamigawa: Neon Dynasty | 166 | Rare | $0.79 | $0.49 |
| Kamigawa: Neon Dynasty | 389 | Rare | $1.99 | $3.99 |
| Kamigawa: Neon Dynasty | 472 | Rare | $0.79 | $0.99 |
| Kamigawa: Neon Dynasty Promos | 166p | Rare | $0.79 | $0.99 |
| Kamigawa: Neon Dynasty Promos | 166s | Rare | — | $1.49 |
3 rulings from Wizards of the Coast
- 18 February 2022A creature with a counter on it is considered modified no matter what kind of counter it is or which player put it on that creature.
- 18 February 2022An Aura controlled by an opponent does not cause a creature you control to be modified.
- 18 February 2022A creature that is equipped is considered modified no matter who controls the Equipment that's attached to it.