[Minecontrol]

Have you considered Pain Mirror?

The percentage damage returned increases with intellect and (i think) is a low mana spell (10 points) Meaning with higher magic you could cast it twice.

Maybe try sending up a deliberately weak enemy beside the Orc Savages (Veterans) and watch them rip at them. It could be Thorn summons or something... Then painmirror the Orcs. It was a spell i found great use for in KBTL vanilla (against the undead general) i have yet to use it in this game but an ability to return in proportion to the enemy their damage is potentially very useful (especially against high attack enemies like Scrounger's veterans), it's a great equaliser.

In that battle i find if you can stop the brutal melee attackers (the two level 5 stacks and the Orc Veterans) and control the effects of the Gob Shamans, then that is what tips the tide.