Cheapest priced copy (Foundations Jumpstart): $0.35 at Card Kingdom, near mint, their price list as of .
Star Pupil 
Creature — Human Wizard · 0/0 · Common · Strixhaven: School of Mages · #30
This creature enters with a +1/+1 counter on it.
When this creature dies, put its counters on target creature you control.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations Jumpstart | 259 | Common | $0.35 | — |
| Strixhaven: School of Mages | 30 | Common | $0.35 | $0.49 |
4 rulings from Wizards of the Coast
- 16 April 2021Star Pupil's ability doesn't cause you to move counters from itself to the target creature. Rather, you put the same number of each kind of counter Star Pupil had when it died onto that creature.
- 16 April 2021If Star Pupil has -1/-1 counters on it when it dies, the last ability will include those as well. This may result in the recipient also dying.
- 16 April 2021Star Pupil puts all of its counters onto the target creature, not just its +1/+1 counters.
- 16 April 2021In some unusual cases, you may end up putting the appropriate counters on more than one permanent. For example, if you control The Ozolith when Star Pupil dies, you will put the appropriate number of each kind of counter onto both The Ozolith and the target creature.