Just had a perfect Alextrasza game, I think she is becoming one of my favorite heroes. Had a good start with a Murloc token on turn 1, upgrade tavern on turn 2, sell token and get two decent tier 2 minions on turn 3. This allowed me a greedy strategy of upgrading tavern tier all the way to 5 in the next 3 rounds. Sure I got a bit of a hit but I was still on a solid 28 health after upgrading to tier5. I got lucky to discover a Razorgore the Untamed and afterwards it was smooth sailing as next round I simply bought whatever dragons I could find and his stats started snowballing out of control, didn't lose a single battle afterwards. However even if you don't get to discover him I still think this is a very sound strategy. You will generally discover two decent dragons that will help you not to lose too badly in the next battle and afterwards you are already in tier 5 when the rest of the lobby is generally at tier 3 and you can be the first to start buying strong minions.
Alex is really hit and miss. I prefer Ysera as she is more consistent. Also upgrading to 3 early by selling is also very risk prone. I tend to be punished in the mid game when I try to pull that off. But good work bud. Feels good when you get really lucky.
So, opponent is down to his last minion, a buffed up Rat Pack. I kill it and 7 1/1 tokens spawn. Nightmare scenario right? Not when your last minion surviving is a Security Rover (which I had given taunt by the way). It ended up spawning 4 more 2/3 mechs, just enough for a 13 damage at the end to kill my opponent ;)
Identical tokens should only yield 1 damage. That would solve a lot of mid-game frustrations from popping off a fed rat pack.