Cheapest priced copy (Commander Masters): $0.49 at Card Kingdom, near mint, their price list as of .
Demon's Disciple 
Creature — Human Cleric · 3/1 · Uncommon · Jumpstart 2022 · #399
When this creature enters, each player sacrifices a creature or planeswalker of their choice.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.49 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Masters | 149 | Common | $0.49 | $1.49 |
| Jumpstart 2022 | 399 | Uncommon | $0.59 | — |
| Zendikar Rising | 97 | Uncommon | $0.59 | $0.79 |
2 rulings from Wizards of the Coast
- 25 September 2020As the triggered ability resolves, first the player whose turn it is chooses a creature or planeswalker they control, then each other player in turn order does the same, knowing the choices made before them. Then all the chosen creatures and/or planeswalkers are sacrificed at the same time.
- 25 September 2020Demon's Disciple can be the creature sacrificed for its own ability.