Cheapest priced copy (Final Fantasy Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Kimahri, Valiant Guardian 
Legendary Creature — Cat Warrior · 3/3 · Rare · Final Fantasy Commander · #175
Vigilance
Ronso Rage — At the beginning of combat on your turn, put a +1/+1 counter on Kimahri and tap target creature an opponent controls. Then you may have Kimahri become a copy of that creature, except its name is Kimahri, Valiant Guardian and it has vigilance and this ability.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 to $7.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Final Fantasy Commander | 85 | Rare | $0.49 | $0.79 |
| Final Fantasy Commander | 175 | Rare | $0.79 | $7.99 |
5 rulings from Wizards of the Coast
- 6 June 2025If the copied creature is copying something else, then Kimahri becomes a copy of whatever that creature is copying, with the listed exceptions.
- 6 June 2025If the target creature is an illegal target as Kimahri's last ability tries to resolve, it won't resolve and none of its effects will happen. You won't put a counter on Kimahri, and Kimahri won't become a copy of anything.
- 6 June 2025If the copied creature has {X} in its mana cost, X is 0.
- 6 June 2025If the copied creature is a token, Kimahri copies the original characteristics of that token as stated by the effect that created the token, with the listed exceptions.
- 6 June 2025Kimahri copies exactly what was printed on the original creature, with the listed exceptions (unless that creature is copying something else or is a token; see below). It doesn't copy whether that creature is tapped or untapped, whether it has any counters on it or any Auras or Equipment attached to it, or any non-copy effects that have changed its types, color, power and toughness, and so on.