Instant, 2UU (4)
Common
Counter target spell. Look at its controller's hand.
"It's good to learn from your failures, but I prefer to learn from the failures of others."
—Jace Beleren
Illus. Chippy

6/15/2010: If the targeted spell is an illegal target by the time Lay Bare resolves, Lay Bare is countered. You won't look at its controller's hand.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern