The crowd laughed heartily at the fool's performance, until his hat laughed back.

Dominaria Remastered

Jester's Cap

{2}, {T}, Sacrifice Jester's Cap: Search target player's library for three cards and exile them. Then that player shuffles.

"They say the last owner cut out his own tongue, laughing the whole time. Superstitious drivel, but amusing, isn't it?"
—Hilde the Collector, last known words

"Know your foes' strengths as well as their weaknesses."
—Arcum Dagsson, Soldevi machinist

From the Vault: Relics

{2}, {T}, Sacrifice Jester's Cap: Search target player's library for three cards and exile them. Then that player shuffles his or her library.

Ninth Edition

{2}, {T}, Sacrifice Jester's Cap: Search target player's library for three cards and remove them from the game. Then that player shuffles his or her library.

"Know your foes' strengths as well as their weaknesses."
—Arcum Dagsson, Soldevi Machinist

Oversized 90's Promos

Fifth Edition

o2, oc
T, Sacrifice Jester's Cap: Look through target player's library and remove any three of those cards from the game. Shuffle that library afterwards.

Pro Tour Collector Set

Ice Age

o2,oc
T: Sacrifice Jester's Cap to look through target player's library and remove any three of those cards from the game. Reshuffle that library afterwards.