If one thing can be said about the undead teams' strategies it's probably that they're not all that elaborate. Pick up the ball, rush it down either flank and land it on the defending team's end zone. Applaud.
This is the usual strategy and it takes whatever from 2-4 turns to complete depending on luck and the skill of the opposing player. In addition, it's also a very foreseeable and the enemy usually has no hard time predicting what you're up to. Though, this is not a problem as long as this means the opposing coach knows you're going to score no matter what he/she does.
But suppose the dice are against you or the opposing coach is just superior to you when it comes to organising a defence? The options get pretty scarce: you can push your luck and try to rush the ball into the end zone through some risky moves and so on, but the odds are against you. What then?
Well, time to dig up the Plan B up from the coffin. The ghouls and wights might not be elves, but AG 3 is decent enough to make, for example, passes. There are additional benefits, too: most coaches don't seem to expect the undead to actually play the ball (ie. start moving the ball via passes). And it's a justified assumption: AG 3 combined with no saving skills to begin with is not the winning combo. But then again, that's why it's called a Plan B. Basically this would mean you'd have to allocate some resources into a inconspicuous place ready for the Plan B (say, a wight or a ghoul at the opposite end of the line of scrimmage) waiting for your primary drive to sputter.

It's not a very novel idea, no. And passing with unskilled AG 3 players is just plain risky no matter how you look at it. However, most coaches don't seem to expect the undead passing (except passing away) so incorporating such a Plan B into your offensive drive might not be a bad idea. A slim chance of scoring is always better than no chance at all - and you might get the ball out of the reach of the opponent's players.