I tried Queen Ysabelle in a human team and a knight team, even a human/knight team and the teams where kind of weak as human and knight teams are a bit weak. So I went and ignored her 3rd trait.
Once you do that you can put her into a team like:
Now this is a Daemon team she rocks in.
Gorgotha is the best tank and mana generator in the game.
Abynissia gives attack to war
War gives attack to War
Queen gives attack to War and lets them survive longer.
Get the Desert Banner to get your mana engine going.
Once you get going it starts to steam roll fast.
Has anyone found a powerful human or knight team that does better than the Queen inside a Daemon team?
What I have found is humans need a bit of a buff. The Queen is a good start but she needs better support human knights.