Polymorphist's Jest
~$7.91 low · ~$14.14 high
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Blue. Instant
Commander 2017 #90 · Illustrated by Craig J Spearing
Commander 2017 #90 · Illustrated by Craig J SpearingWhat is Polymorphist's Jest worth?
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TCGplayer market prices in USD, updated October 14, 2026. Each price is for one printing and one finish.
Oracle text
Until end of turn, each creature target player controls loses all abilities and becomes a blue Frog with base power and toughness 1/1.
"The flies were bothering me." —Jalira, master polymorphist
Format legality
All 2 printings of Polymorphist's Jest
| Printing | Rarity | Non-foil | Foil | Cardmarket (EUR) | My collection |
|---|---|---|---|---|---|
 Commander 2017 c17 #90· 2017rare· Cardmarket €5.71 | rare | $9.66 | No foil printing | €5.71 | |
 Magic 2015 m15 #75· 2014rare· Cardmarket €4.60 · €10.06 foil | rare | $7.91 | $14.14 | €4.60€10.06 foil |
Prices are TCGplayer market prices in USD for each printing and finish, via Scryfall. They are a guide, not an appraisal.
Where to buy Polymorphist's Jest
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Card details
- First printed
- 2014
- Printings
- 2
- Mana value
- 3
- EDHREC rank
- #4,633 on EDHREC (Commander popularity)
- Artist
- Craig J Spearing
What the codes mean
The small print at the bottom of the Commander 2017 card (#90).
090 · C17 · R · EN
- 090Collector number: this card's place in the set list. Main-set cards print it over the set's card count.
- C17Set code for Commander 2017
- RRare
- ENPrinted in English
How to read a Magic card: every part and code, on real cards.
Rulings (7)
July 18, 2014
If one of the affected creatures gains an ability after Polymorphist’s Jest resolves, it will keep that ability.
July 18, 2014
The creatures will lose all other colors and creature types, but they will retain any other card types (such as artifact) or supertypes (such as legendary) they may have.
July 18, 2014
Effects that modify a creature’s power and/or toughness, such as the effect of Titanic Growth, will apply to the creatures no matter when they started to take effect. The same is true for any counters that change their power and/or toughness and effects that switch power and toughness.
July 18, 2014
Creatures that enter the battlefield or come under the target player’s control after Polymorphist’s Jest resolves won’t be affected.
July 18, 2014
If one of the Theros block Gods is affected by Polymorphist’s Jest, it will be a legendary 1/1 blue Frog enchantment creature with no abilities. If it stops being a creature, perhaps because your devotion to its color(s) decreased, it will be a legendary blue enchantment with no abilities. The way continuous effects work, the God’s type-changing ability is applied before the effect that removes that ability is applied.
July 18, 2014
Polymorphist’s Jest doesn’t counter abilities that have already triggered or been activated. In particular, there is no way to cast this spell to stop a creature’s ability that says “At the beginning of your upkeep,” “When this creature enters the battlefield,” or similar from triggering.
July 18, 2014
Polymorphist’s Jest overwrites all previous effects that set the creatures’ base power and toughness to specific values. Any power- or toughness-setting effects that start to apply after Polymorphist’s Jest resolves will overwrite this effect.
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