Look at this topic and answer: Your way with "extreme" mission?
Don’t get me wrong @Wenlock . I don’t criticize you or your gameplay but a game design that makes both sides extremaly OP and turns tactical battle into turnbased League of Legends team fight.
Of course it requires hell of preparation and isn’t easy to achive, so I’m not going to talk about balancing it one way or another here. It just, hmm, doesn’t sound like a tactical approach. It is very close to collectible card game, like Magic: the Gathering. You’ve collected set of tools and options and you try to setup situation where you can execute them in particular order to achieve great combo effect. Next turn reshuffle discard deck, rinse and repeat.
And not because player side is OP and therefore should be nerfed. It’s because extreme mission can be so unbalanced. It is alpha strike unleash hell or be swarmed, bombarded, mind-controlled and die.