I am interested in the concept of being Jester's Capped as an additional cost. In Vintage, would a card like this be too powerful?
Ancestral Joke

Instant
Target opponent may search your library, choose up to three cards, and exile them. Shuffle your library afterwards, then draw three cards.
Or how about a creature along those lines?
Balduvian Jesters


5/5
When this comes into play, target opponent may search your library, choose up to four cards, and exile them. Shuffle your library afterwards.