Quicksilver Dragon

Flying
{U}: If target spell has only one target and that target is Quicksilver Dragon, change that spell's target to another creature.
Morph {4}{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.)

The List

Duel Decks Anthology: Jace vs. Chandra

Duel Decks: Jace vs. Chandra

Flying
{U}: If target spell has only one target and that target is Quicksilver Dragon, change that spell's target to another creature.
Morph {4}{U} (You may play this face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Onslaught

Flying
o
U: If target spell has only one target and that target is Quicksilver Dragon, change that spell's target to another creature.
Morph o4o
U (You may play this face down as a 2/2 creature for o3. Turn it face up any time for its morph cost.)