Teeeheee heee Tyrant noobs.
Don't sell any card, ever. It's not Atlei, return rate is so ridiculously small it's not worth.
Tyrant is fun for a few weeks, but constant grind vs computer palying his card randomly (and you thought Alteil's NPCs had poor AI...) gets boring soon, some time later you realize there are very few successfull defence decks in faction wars (and by successfull I mean around 20% - 30% win rate), Standard tournaments are same 5 decks and occasional noob who has no clue what he's doing. And Sealed Tournaments are entertaining for only so long.
Lvl 63, all achievements completed except new one (I was too bored to get top 1% in tourney again), all reputation grinded, about half of all raids, obviously all missions. If anyone is still playing War Metal Grind, feel free to ask question, I'll try to answer as soon as I'm done mocking you, n00b.