Knights of Tezoth

Possibly. But even for such hardcore "min-maxers" as Yashchur, the power is not limitless...

Well, in my opinion, you've created not so much a trio of terminators/a terminator with two supports, but rather a trio of supports. There are plenty of safeguards against various unpleasant effects, but they are fragile and there is practically no damage, if you don't count various types of undead.