Cheapest priced copy (The List): $1.79 at Card Kingdom, near mint, their price list as of .
Mischievous Quanar 
Creature — Beast · 3/3 · Rare · The List · #SCG-42
{3}{U}{U}: Turn this creature face down.
Morph {1}{U}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When this creature is turned face up, copy target instant or sorcery spell. You may choose new targets for that copy.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $1.79 to $5.99 at Card Kingdom
One ruling from Wizards of the Coast
- 15 April 2013If a spell with split second is on the stack, you can still respond by turning this creature face up and targeting that spell with the trigger. This is because split second only stops players from casting spells or activating abilities, while turning a creature face up is a special action.