Cheapest priced copy (Ravnica Remastered): $2.29 at Card Kingdom, near mint, their price list as of .
Rakdos, Lord of Riots 
Legendary Creature — Demon · 6/6 · Rare · Ravnica Remastered · #379
You can't cast Rakdos unless an opponent lost life this turn.
Flying, trample
Creature spells you cast cost {1} less to cast for each 1 life your opponents have lost this turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
7 printings · $2.29 to $13.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends | 532 | Mythic | — | — |
| Duskmourn: House of Horror Commander | 230 | Mythic | $2.79 | — |
| RNA Guild Kit | 52 | Mythic | — | $4.49 |
| Return to Ravnica | 187 | Mythic | $3.49 | $13.99Out of stock |
| Ravnica Remastered | 215 | Rare | $2.29 | $2.99 |
| Ravnica Remastered | 379 | Rare | $2.29 | $2.49 |
| Ravnica Remastered | 379z | Rare | — | — |
7 rulings from Wizards of the Coast
- 10 November 2020Rakdos's last ability cares about the total life lost, not necessarily what an opponent's life total is compared to what it was at the beginning of the turn. For example, if an opponent loses 5 life and then gains 10 life in a turn, creature spells you cast will cost {5} less to cast.
- 10 November 2020Damage dealt to a player causes that player to lose that much life.
- 10 November 2020Rakdos can be put onto the battlefield by another spell or ability even if no opponent has lost life that turn.
- 10 November 2020Rakdos's last ability won't reduce the cost to cast Rakdos itself. It applies only to creature spells you cast once Rakdos is on the battlefield.
- 10 November 2020If there are additional costs to cast a creature spell, such as a kicker cost or the commander tax, apply those increases before applying cost reductions.
- 10 November 2020If an opponent lost life and subsequently lost the game, Rakdos's first ability is satisfied, and its last ability counts that loss of life.
- 10 November 2020Rakdos's last ability can't reduce the colored mana requirement of a creature spell you cast.