Cheapest priced copy (Foundations Jumpstart): $0.35 at Card Kingdom, near mint, their price list as of .
Pridemalkin 
Creature — Cat · 2/1 · Common · Core Set 2021 · #196
When this creature enters, put a +1/+1 counter on target creature you control.
Each creature you control with a +1/+1 counter on it has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
4 printings · $0.35 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 711 | Common | $0.59 | — |
| Foundations Jumpstart | 700 | Common | $0.35 | — |
| Core Set 2021 | 196 | Common | $0.35 | $1.99 |
| March of the Machine Commander | 308 | Common | $0.39 | — |
2 rulings from Wizards of the Coast
- 23 June 2020Pridemalkin's second ability applies to Pridemalkin as long as it has a +1/+1 counter on it.
- 23 June 2020Pridemalkin can be the target of its own first ability.