Cheapest priced copy (Foundations): $0.69 at Card Kingdom, near mint, their price list as of .
Skyknight Squire 
Creature — Cat Scout · 1/1 · Rare · Foundations · #448
Whenever another creature you control enters, put a +1/+1 counter on this creature.
As long as this creature has three or more +1/+1 counters on it, it has flying and is a Knight in addition to its other types.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
5 printings · $0.69 to $10.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations | 23 | Rare | $0.69 | $0.99 |
| Foundations | 301 | Rare | $1.29 | $2.49 |
| Foundations | 370 | Rare | — | $10.99 |
| Foundations | 448 | Rare | $0.99 | $0.99 |
| Foundations Promos | 23s | Rare | — | $1.29 |
2 rulings from Wizards of the Coast
- 8 November 2024Once Skyknight Squire has been blocked, putting enough +1/+1 counters on it to give it flying won't cause it to become unblocked.
- 8 November 2024If Skyknight Squire enters at the same time as one or more other creatures you control, its first ability will trigger for each of those other creatures.