@Gotan It's because the commander has enfeeble along with the strike, so he can strike 2 on your enfeebled card. Register on the fansite for decks that you can use to complete the mission.
@miboza: You need to get another Freddie card before you can upgrade. As a rule of thumb, upgradeable cards need 2 for upgrade, and only the pack cards are free to upgrade.
Devs haven't abandoned us... yet. They are releasing a new Epic Blightbloom raid on March 25th. They're considering to reduce Flashpoint to 10 shards. Devs are also planning to create a new “Upgraded card” Sealed tournament. Check out the forums sometimes, guys.
Once, I was facing an opponent with all my slots filled with phoenixes and with 10+ fire. After around 30 minutes, I ended up with ridiculous amounts of power and killed the opponent with the damage which the phoenixes gave as they died.
It would be great if there was something telling you how far you had run, as it's hard to compare actual skill from the score due to the combos and powerups.