Cheapest priced copy (Reality Fracture Commander): $2.49 at Card Kingdom, near mint, their price list as of .
Archon of Cruelty 
Creature — Archon · 6/6 · Mythic · Modern Horizons 3 Commander · #197
Flying
Whenever this creature enters or attacks, target opponent sacrifices a creature or planeswalker of their choice, discards a card, and loses 3 life. You draw a card and gain 3 life.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
6 printings · $2.49 to $34.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duskmourn: House of Horror Commander | 371 | Mythic | — | $34.99 |
| Reality Fracture Commander | 47 | Mythic | $2.49 | — |
| Modern Horizons 3 Commander | 197 | Mythic | $9.49 | $17.99 |
| Modern Horizons 2 | 75 | Mythic | $9.49 | $24.99 |
| Modern Horizons 2 | 342 | Mythic | $9.49 | $19.99 |
| Modern Horizons 2 Promos | 75s | Mythic | — | $23.99 |
One ruling from Wizards of the Coast
- 18 June 2021You and the opponent you target take all the actions in the order listed. Notably, the creature or planeswalker they sacrifice won't be on the battlefield as they discard a card or lose life. If any abilities trigger, they will wait to be put on the stack until after the spell resolves. If any abilities controlled by that opponent trigger but losing 3 life causes them to lose the game, none of those abilities will be put on the stack.