7th. the first one that can drop UR Tiger of Kai. It's exactly what Semaphore pointed out. I don't have enought HP on my units. I can deal decent damage to the enemy, but in this case I can't survive exchange of blows long enough to win.
At least I got middle part of Evo catalog and finally got my Tiger of Kai to lv55. I was hoping I can get another one, and start working on leveling her, but I guess not this time.