<grumbles> this is why I like level 3 magic shackles. Mass Shackle!
But at the moments they out leadership you, you got to take desperate measures.
lore, yeah the orcs are grossly overpowered. I am now testing out my Orc Veterans to replace my Assassins, and it is not looking good for the assassins.

(All because the game only spawned 28 Orc Veterans naturally, so I had to wear that stupid regalia to get the trophies needed to convert normal orcs into Veterans).
Goblin shaman are pretty pitiful damage to leadership, but, in Impossible Mode the computer "cheats" so it has far more leadership anyways.
Anyway, they are nothing compared to Blood Shaman, who are Level 4, have far more HP, can do Power of the Horde (thank god this one is magic damage), or yet another Astral Attack which will turn Black Dragons into silly putty.
Icecool, those are the names of the other campaigns
Champion of the Arena (CotA)
Defender of the Crown (DOTC)
Orcs on the March (OOTM)