Which Dragon did you pick?

[Infiltrator]

About the geyser thing - having Summons helps BIG time.

There is just one thing I've noticed, if I don't place one of my summons right in front of the enemy line, he still geysers. So I experimented and summoned some cerberi right in front of them and the enemy focused on the closest stack (polymorphing it) rather than geysering.

I quickly killed/disabled all other units before he had another chance to cast.