Already in play:
(http://overpower.ca/cards/specials/812.png)
Opponent plays against maverick:
(http://overpower.ca/cards/specials/231.png)
Can maverick use 1 power card to block it?
In this instance, I would say no, as a level 1 Power Card augmented by a +2 to all actions special card is still a Power Card and not a special card. The attack special flatly states that it can ONLY be defended by a defensive Special Card.