Don’t know what you consider good. I’m casual so haven’t got past rank 2 yet. Now rank 6 slowly climbing…
I hate abyssian the most, you see their moves from a mile yet most of the time countering that is not easy. even if you kill 2 revenants they can still have more or just revive one or whatever. And kaleinos that just keep healing them to full, by just being there and at 5 hp if they put it on backline very hard to remove especially if they play 2-3 of them.
Usually you just try to kill them before 8 mana turn, to do this you attack and corner the cassiva. This card is free escape from jail card: only 6 mana to remove everything that is hitting her in the face and spawn wraightlings in their space, if cassiva wasn’t a walking countdown to your death maybe it would be reasonable, maybe you could afford to spend time playing around this somehow (still this is insane value its like better version of makantor or holy immulation, not limited to 4 damage, comes from hero so you can reposition before use and spawns minions on top of the dead bodies). Killing their own minions hardly a drawback for abyssian they either get extra value from it or move the minions or cassiva before attacking. If she is cornered she likely has no minions to begin with.
k