I assume no one has ever reviewed this card because no one has ever played it in a deck?

Exhausting two characters instead of one to avoid damage is costly on its own. Forget that you would have to have a Guardian and Avenger both in play. Maybe w/ Starlord handing out the keyword, but who plays Starlord Protection???

Preemptive Strike only costs one and can deal all boost damage back to an enemy. So why would you ever pay three more AND exhaust two characters to add the villain's attack. Best used as card divider rather than in your deck.