[Lazy_Perfectionist]

Nationals? MA Agartha. Well its in enchantment, not conjuration, but Attentive Statues followed by another school or two, followed by Enliven Sentinels, etc.

I've had 10 Attentive Statues take out 70 independents, without support. I've also had them intsa-gibbed when I didn't properly protect my magic leadership, and a stray arrow gibbed the only mage on the battlefield. They do have that drawback of being never healing outside of labs, but on the plus side, your dominion can double their hitpoints.