I've noticed a bug with Zovac's (the poisoner) Passive skill. Sometimes it just won't trigger. An enemy will die of poison and it won't transfer to another enemy. If I had to guess I'd assume creature dies and the poison effect is given to the same dying creature. Is this intentional? I just wanted to point it out in case it was a bug.
EDIT: I found out I was being dumb. I thought poison just transferred to any other enemy on the board, then read that they had to be adjacent. /facepalm
A really great game! I'm sad that it's only available on google play, I'd love to be able to get it on the app store and play on the go.