About Poisons/SoSac, I've found a strategy to beat them more frequently.
When the AI starts it's SoSac chain, instead of trying to reduce your damage output, increase it to the maximum you can, and wait the end of the chain to two-shot it. The Crusader HAS to endow the Vampire if you want to survive the poison tokens. Try to get more endow mutants with the druid too. Don't hesitate to use the druid on the Squid, the Otyugh etc. You need big damage and endow mutants.
If you ever have 2 antimatter in the SoSe, use them on your big hitter only, and reverse him to the previous state at the end of the SoSac.
I also won against some Ghostmare, but I got lucky I think with the SoSe and the quantums I got. No changes in the strategy.
@Mycale: if you need some rares, this deck has something like 99% win rate in bronze league.
But this deck has a few rules of its own that you will discover in a few dozens of games, mainly about the quantum/SoSe management during the early game. With some experience, you can do awesome tricks! :p