Madcap Experiment

As of Jul 29, 2026, the cheapest tracked printing of Madcap Experiment is $0.26 (KLD #122, Foil), and the most expensive is $0.50 (PKLD #122s, Prerelease, Foil). The benchmark price (cheapest playable nonfoil) is $0.30, up 15.4% over 7 days, up 42.9% over 30 days, up 114.3% over 90 days. All-time tracked high: $0.30 (2026).

Madcap Experiment has 2 tracked printings across 2 sets, in nonfoil and foil finishes, including prerelease treatments.

KLD #122 Foil

$0.26

CK $0.79 / $0.12 54%

MP $0.30 15 avail

KLD #122

$0.30

CK $0.49 / $0.03 90%

MP $0.15 683 avail

PKLD #122s Prerelease Foil

$0.50 +67%

CK $0.69 / $0.18 64%

MP $0.51 6 avail

Card Kingdom currently pays $0.18 cash for PKLD #122s (Foil); the retail-buylist spread on that printing is 74% (wide).

• Sep 20, 2016 Any abilities that trigger as the artifact enters the battlefield aren't put onto the stack until Madcap Experiment is done resolving.
• Sep 20, 2016 If you don't reveal an artifact card, you'll randomize your library and be dealt damage equal to the number of cards in your library.
• Sep 20, 2016 Once Madcap Experiment begins resolving, no player may take any actions other than those specified by Madcap Experiment until it's done resolving.
• Sep 20, 2016 The number of cards revealed this way includes the artifact card you put onto the battlefield.

Madcap Experiment has been reprinted 3 times.

Set	Date	Rarity	Treatment
PKLD #122s	2016-09-30	Rare	Prerelease
KLD #122	2016-09-30	Rare	Standard
KLD #122	2016-09-30	Rare	Standard

Madcap Experiment is the #21,504 most-played card on EDHREC, up 52 places over the last 30 days.