Naepharokhl
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Try focusing on summoning light elementals. If that's even possible.
They heal their own, have retaliatory attacks, and are quite durable, allowing them to withstand enemy attacks for a while. They're a good addition to the army, and if you also have scrolls, that's even better.
I haven't even seen light elementals once. I can't summon them because I'm developing Anton along the path of strength and tears. And he's only level 13, so he doesn't have many skills.