Quantum Riddler

As of Aug 7, 2026, the cheapest tracked printing of Quantum Riddler is $35.64 (EOE #72), and the most expensive is $50.91 (PEOE #72s, Prerelease, Foil). The benchmark price (cheapest playable nonfoil) is $35.64, up 10.8% over 7 days, up 15.1% over 30 days, down 10.3% over 90 days. All-time tracked high: $47.48 (2026).

Quantum Riddler has 4 tracked printings across 2 sets, in nonfoil and foil finishes, including borderless, promo pack and prerelease treatments.

EOE #72

$35.64

CK $57.99 / $32.00 10%

MP $33.68 62 avail

EOE #72 Foil

$36.82 +3%

CK $59.99 / $24.00 35%

MP $36.47 33 avail

PEOE #72p Promo Pack

$39.77 +12%

CK $57.99 / $29.00 27%

MP $38.54 9 avail

PEOE #72p Promo Pack Foil

$42.01 +18%

CK $74.99 / $37.50 11%

MP $40.21 11 avail

EOE #305 Borderless

$43.79 +23%

CK $69.99 / $42.00 4%

MP $43.72 43 avail

EOE #305 Borderless Foil

$50.13 +41%

CK $79.99 / $32.00 36%

MP $54.44 20 avail

PEOE #72s Prerelease Foil

$50.91 +43%

CK $79.99 / $44.00 14%

MP $52.30 6 avail

Card Kingdom currently pays $44.00 cash for PEOE #72s (Foil); the retail-buylist spread on that printing is 45% (wide).

• Jul 25, 2025 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.
• Jul 25, 2025 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.
• Jul 25, 2025 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.

Quantum Riddler has been reprinted 7 times.

Set	Date	Rarity	Treatment	Price before	Day 1	30 days	90 days
EOE #305	2025-08-01	Mythic	Borderless	$14.97	$22.78	$34.67	$47.12
PEOE #72p	2025-08-01	Mythic	Promo Pack	$9.35	$14.04	$24.26	$35.90
EOE #72	2025-08-01	Mythic	Standard	$11.07	$19.82	$27.60	$35.33
PEOE #72p	2025-08-01	Mythic	Promo Pack	—	$17.80	$21.84	$33.31
PEOE #72s	2025-08-01	Mythic	Prerelease	—	$24.73	$25.21	$39.96
EOE #305	2025-08-01	Mythic	Borderless	$24.54	$27.65	$43.09	$59.36
EOE #72	2025-08-01	Mythic	Standard	$12.35	$20.84	$25.97	$47.90

Quantum Riddler is the #9,649 most-played card on EDHREC, up 246 places over the last 30 days.