Helper
EOE #305

Quantum Riddler

Creature — Sphinx
Quantum Riddler
Foil Avail.
My Collection
You own 0 copies
NON-FOIL
0
FOIL
0
Buy on TCGPlayer $64.99 CardKingdom

Quantum Riddler

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

Card Information

Color: U
Identifies: U
Cost:
CMC: 5
Types: Creature
Subtypes: Sphinx
P/T: 4 / 6
Rarity: mythic
Languages:
Layout: normal
Rank:
#9,655
Saltiness:
0.35 / 4.0

Official Rulings

2025-07-25
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.
2025-07-25
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.
2025-07-25
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.

Usage Stats Deck Integration

8,147 Total Decks
View All Decks

Legalities

Reddit Activity

2026 Check Who Are Your Blinkflinker Commanders r/edh
-
And On The 7th Pack Tezzeret Joined The Crew r/freemagic
-
When To Buy New Set Singles r/mtgfinance
-
Whats Your Favorite Underloved Mechanic r/magictcg
-
Frogtide Decklist Advice Needed r/modernmagic
-