It would probably be easier if you just put what the sweet trade ability is in the notes for this card, just so people don't have to follow yet another link (from the crucible) to figure out what the card does.
OT, the ability seems like it could be good. As Malduk noted, quanta denial is strongest in the beginning, but since it's not too hard to generate a sizable number of skeletons, you might be able to establish enough denial to go into lockdown later in the game.