Quantum Riddler 
Creature — Sphinx4/6
Oracle text (EN)
Creature — Sphinx
Flying
When this creature enters, draw a card.
As long as you have one or fewer cards in hand, if you would draw one or more cards, you draw that many cards plus one instead.
Warp 
Printing details
- Set
- EOE · 72
- Rarity
- Mythic
- Language
- EN
- Artist
- Izzy
- Released
- 2025-08-01
- Prices
- €51.20 · $33.78
Price history
The trend shows with at least 7 days of history.
- Cardmarket, trend
- CardTrader, Near Mint minimum (EN)
The history starts on October 28, 2026 and grows every day.
Show the data
| Date | Cardmarket, trend | CardTrader, Near Mint minimum (EN) |
|---|---|---|
| November 1, 2026 | €51.10 | €50.64 |
| October 31, 2026 | €51.20 | €50.64 |
| October 30, 2026 | €51.08 | €50.64 |
| October 29, 2026 | €51.11 | €50.64 |
| October 28, 2026 | €50.10 | €50.64 |
Prices
| Source | Non-foil | Foil |
|---|---|---|
| Cardmarket | low €40.00 trend €51.10 30-day avg €51.52 | low €45.67 trend €54.61 30-day avg €55.98 |
| CardTrader (EN) | NM from €50.64 with Zero from €51.20 | NM from €52.26 with Zero from €71.37 |
| CardTrader (any language) | NM from €50.04 | NM from €52.26 |
Cardmarket updated Nov 1, 2026 · CardTrader updated Nov 1, 2026
Buy and look up
Legality
- standard Legal
- pioneer Legal
- modern Legal
- legacy Legal
- vintage Legal
- commander Legal
- pauper Not legal
- alchemy Legal
- brawl Legal
- competitivebrawl Legal
- duel Legal
- future Legal
- gladiator Legal
- historic Legal
- oathbreaker Legal
- oldschool Not legal
- paupercommander Not legal
- penny Not legal
- predh Not legal
- premodern Not legal
- standardbrawl Legal
- timeless Legal
- tlr Not legal
Rulings
-
Quantum Riddler’s replacement effect applies to an instruction to draw more than one card before any replacement effects apply to individual cards drawn. For example, if you control Thought Reflection (an enchantment with “If you would draw a card, draw two cards instead.”) and you cast Decode Transmissions while you have one or fewer other cards in your hand, you’ll apply Quantum Riddler’s replacement effect first, changing the “draw two cards” instruction to “draw three cards.” Then Thought Reflection’s replacement effect will apply to each of those three individual card draws, causing you to draw a total of six cards.
-
Once a replacement effect has been applied to an event, it can’t be applied again to the newly modified event. For example, once Quantum Riddler’s replacement effect has modified the “draw two cards” instruction of Decode Transmissions, Thought Reflection’s replacement effect can double the resulting card draws without Quantum Riddler’s replacement effect applying again.
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If an effect instructs you to draw more than one card, Quantum Riddler’s replacement effect applies to that entire instruction, not the individual card draws represented by the instruction. For example, if you control Quantum Riddler and you cast Decode Transmissions while you have no other cards in your hand, Quantum Riddler’s replacement effect will apply, and you’ll draw three cards instead of two.