I don't know. At the basic values (30 tower and 3 of each facility), you're spending 9 bricks to gain 6 gems and 6 recruits above standard production, and you have the Alliance keyword. Whereas that's pretty dull for a Rare at just that, consider that in an Alliance deck you're likely to have increased some of your facilities, have allowed your opponent to build a bit, and not playing this card until triggering the keyword effect to double what it's already doing. It already has the potential to do a lot relatively cheaply.