Cheapest priced copy (Modern Horizons 3): $3.99 at Card Kingdom, near mint, their price list as of .
Marionette Apprentice 
Creature — Human Artificer · 1/2 · Uncommon · The List · #MH3-100
Fabricate 1 (When this creature enters, put a +1/+1 counter on it or create a 1/1 colorless Servo artifact creature token.)
Whenever another creature or artifact you control is put into a graveyard from the battlefield, each opponent loses 1 life.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $3.99 to $4.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons 3 | 100 | Uncommon | $3.99 | $4.49 |
| Modern Horizons 3 | 410 | Uncommon | $4.99 | $4.99 |
| The List | MH3-100 | Uncommon | — | — |
3 rulings from Wizards of the Coast
- 7 June 2024If you can't put a +1/+1 counter on the creature for any reason as fabricate resolves (for instance, if it's no longer on the battlefield), you just create a Servo token.
- 7 June 2024You choose whether to put a +1/+1 counter on the creature or create a Servo token as the fabricate ability is resolving. No player may take actions between the time you choose and the time that a counter is added or a token is created.
- 7 June 2024Fabricate doesn't cause the creature with the ability to enter the battlefield with +1/+1 counters already on it. For example, Marionette Apprentice will enter the battlefield as a 1/2 creature, then its fabricate ability goes on the stack. Players may take actions (such as casting instants) while the ability is waiting to resolve.