Format Legality
Pre-release Legal
1v1 Commander Legal
Magic Duels Legal
Vintage Legal
Modern Legal
Standard Legal
Leviathan Legal
Legacy Legal
Duel Commander Legal
Unformat Legal
Pauper Legal
Commander / EDH Legal

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Set Rarity
Hour of Devastation Uncommon

Combos Browse all



Whenever you cast a noncreature spell, you may have Riddleform become a 3/3 Sphinx creature with flying in addition to its other types until end of turn.

2U: Scry 1.

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0.01 TIX $0.02 Foil


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Riddleform Discussion

landofMordor on UW cycling

1 week ago

I would cut your Cunning Survivor for Countervailing Winds or another utility creature. Riddleform is an evasive enough threat that you might not need the additional threat, and that change would boost your cycling percentage, which seems a little low here.

_Kane_ on Grixis Control

1 week ago

I also agree you with WednesdayAdamsMan in that you need to add at least 3 more lands. You can accomplish this task by adding 2 more Fetid Pools and a play set of Canyon Slough. Then cutting both Crypt of the Eternals, as there are better options, and adding the following; 2 Torment of Hailfire (as this gives your opponent the choice of least), 1 Riddleform (under the condition that you are adding the 4 Thing in the Ice  Flip), and finally 1 Negate.

Again these suggestions are due to the deck having an average CMC and high number of CMC cards. Meaning the 3.08 avg CMC and 7 cards (i.e. +10%) with a CMC >=5.

Noctem on Mono Red Burn HOU

1 week ago

Jim Davis from Starcity games seems to agree with you though his version runs cards like Soul-Scar Mage, Stormchaser Mage and Riddleform. You can find his decklist here:


He says he believes the deck is good enough to top 8 at the events over the weekend.

Countermage on Izzet Prowess

3 weeks ago

This deck looks so much fun, but it seems pretty fragile against sweepers since you don't run Negate mainboard. Have you considered cards like Riddleform , Kefnet the Mindful, Reason / Believe or Consign / Oblivion, to name a few?