Cards pre forgotten legacy

So I have a few questions, mainly about getting cards.

I have Forgotten legacy now and its awesome. However there are some cards that i want from previouse sets like second city and back that I want to use for my deck. (Sundering strike doesnt solve all my problems) How do I get a hold of boxes of older sets? I looked on AEG website and they had nothing.

Like headbutt, its a kill action for berserkers i want this!!

Brick and mortar stores can still order in those sets, and of course you can find them online (www.coolstuffinc.com is what most people go with since they are based in Orlando and their prices are just unbeatable). Just so you know, The Dark Side has a handful of Second City left, and about 30 packs of Before the Dawn. I'm sure Anthem also has some stock of those sets left. You really should have no problem getting older sets until later in the arc. I remember needing older sets in Celestial Edition late in the arc and them being very difficult to find.

Awesome thank you