Instant, 5UU (7) You may remove two blue cards in your hand from the game rather than pay Commandeer's mana cost. Gain control of target noncreature spell. You may choose new targets for it. (If that spell is an artifact, enchantment, or planeswalker, the permanent comes into play under your control.)1
Illus. John Matson
You cannot remove this card since it is in the stack already when you are choosing cards to pay the cost. [Coldsnap FAQ 2006/06/14]
Even though you control the spell, it goes to its owner's graveyard. [Coldsnap FAQ 2006/06/14]
After you gain control of the spell, references to "you" in the card text refer to you and not the former controller. [Coldsnap FAQ 2006/06/14]
You do not have to change the targets, but you can. If you do change them, the new targets must be legal. If you don't change them, they can remain illegal. [Coldsnap FAQ 2006/06/14]
Coldsnap
(Rare)