Some more to the collection:
Over Fire Queen. I have 2 Otys in the deck, but fist one was deep in the deck. So I used Fractal on a Oty (I usually use in the Fallen Druid), and finally I could eat the Queens and remaining fireflies. My 2 Fire Storms didnt kill the Queens, so before that the situation was really risky.
Over Elidnis. Got some really strong mutants in this one. The normal Azure Dragon is a card I had reversed with Eternity, it had Momentum and a great attack, and I was a bit worried about surprise TU attack at that point. 2 more turns and I would destroy even the remaining towers