NB's all over this one.
The only problem with
Retribution is that it requires winning, which sometimes doesn't happen.
If you use
BTIF with Underling, you can at least run some events out so your guys can win, or maybe add some burdens. And
Mocking Goblin works best with that. Porter Trolls, well, can add more burdens in mostly the same way, and, of course, are awesome big guys to give scimitars.