Cheapest priced copy (Foundations): $0.35 at Card Kingdom, near mint, their price list as of .
Cat Collector 
Creature — Human Citizen · 3/2 · Uncommon · Foundations · #4
When this creature enters, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.")
Whenever you gain life for the first time during each of your turns, create a 1/1 white Cat creature token.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
1 printing · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations | 4 | Uncommon | $0.35 | $0.79 |
2 rulings from Wizards of the Coast
- 8 November 2024If you gain life during your turn before Cat Collector is on the battlefield, its last ability won't trigger that turn even if you gain life again later in the turn.
- 8 November 2024Cat Collector's last ability triggers just once and creates just one Cat token for the first life-gaining event on each of your turns, no matter how much life you gain.