Cheapest priced copy (Ravnica: Clue Edition): $2.79 at Card Kingdom, near mint, their price list as of .
Rakdos, the Showstopper 
Legendary Creature — Demon · 6/6 · Mythic · Ravnica Allegiance · #199
Flying, trample
When Rakdos enters, flip a coin for each creature that isn't a Demon, Devil, or Imp. Destroy each creature whose coin comes up tails.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $2.79 to $9.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ravnica: Clue Edition | 205 | Mythic | $2.79 | — |
| Ravnica Allegiance Promos | 199s | Mythic | — | $9.49 |
| Ravnica Allegiance | 199 | Mythic | $3.99 | $8.99 |
2 rulings from Wizards of the Coast
- 25 January 2019All of the creatures whose coins come up tails are destroyed at the same time.
- 25 January 2019Players can't take any action between the time that coins are flipped and the time creatures are destroyed. For example, if they wish to cast a spell to have a creature gain indestructible, they must do so before Rakdos's triggered ability resolves, without knowing whether that creature's coin will come up heads or tails.