I'm looking for a list of all cards (regular and large size). I am trying to complete my collection.
I have the base, all expansions, and the oblivaeon kickstarter with all addons. But I know there are special cards from special events.
I just want to make sure my set is totally complete.
Thanks!!!
If you have all the expansions, then the only other things are the variants.
There are 4 commercial variant packs: the foil oversized villain pack, the oversized villain pack (which is redundant if you own the foils, but if you're really a completionist, they're a separate thing), the foil hero pack, and the complete hero variant pack (again, redundant if you own the foils).
Then there's the original promo variants. Here's where things get hard. They were mostly limited releases, and most are out of print. The original Young Legacy in particular is rare and worth quite a bit. But there's one of these for every variant, including villain variants. Argent Adept does have one weird one: the "original" is Kvothe Six-String and the "collector's edition" is the Dark Conductor.
Are you counting ALL the different Arts on the variants too?
Well, “all” the arts are just what MindWanderer added to Jason’s list:
The complete variants (foil or not)
The original print run variants
Plus completionist Guise, who was being weird.
Fixed that for you. 
There is also the original oversized villain pack with the old artwork, which is out of print.
Plus the original printing of the game, with some arts that were improved in the Enhanced Edition, and environment cards without artwork!
And Cleverest Legacy, who is a cannon character, but not a cannon card!