I reread through your previous thread, and it sounds like placing a few lower resistances in a spell trigger to be fired off on first sight of the dragon would make your life a lot easier. without lowering his resistance most of those spells you threw at him never phased him. Take away his resistance and all those fireballs, magic missiles and flame strikes would have destroyed him.
Also, I know he's just gonna annihilate your summoned creatures, but try summoning something a little more powerful than dire wolves, like elementals or djinns or nishruus, etc.
Hope this helps.
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trux
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