Controlling an army should be fairly trivial for a black deck and even if you need to crew it, the rate you get is likely worth trying it
Kit Cloudkicker and Jasper, Common Crook are inexpensive characters that can help stall your opponent , while Cubby, Mighty Lost Boy can effectively take down opposing characters of almost any size, provided you have a Location to move him to
Once per turn, you can either: Target 1 face-up monster you control
You can only use the [2] effect of this card once per turn
On the other hand, if you're ahead, the option to bring back a creature from your graveyard is invaluable
This mechanic appears to interact with other players' graveyards and bring creatures back to the battlefield under your control, only as a Borg rather than their previous types