[Belac]

In vanilla, Dragon Master is level 8, which is way too high. OTOH, it kind of makes sense--in early game, 1 high-HP fire-spitting creature is fairly powerful, so when Conj-3 has just been researched having large numbers of fire drakes would be problematic. But by the time Ench-8 is researched, 1 fire drake is fairly useless, so this gives you a way to make the spell useful again by letting you mass them.

I'd favor moving Dragon Master to Ench-5 or 6, or creating a set of Summon Drake/Wyvern Horde spells which are Conj-6 and require Nature 1 as well as the original elemental path.