Comic Expansions

Epic Dueling Comics (Off-Site Link) by Darth Wolverine. Marvel and DC Heroes alike are represented in Epic Duels with a special Single Player format. Over 50 DC characters have comprehensive deck analysis, while Marvel is catching up with 30 characters and counting!

DC Expansion by JAG18. Decks for DC characters made to be compatible with Epic Dueling Comics.

Marvel and DC Decks by JackandCrew. 11 decks based on comic book characters.

MCU Epic Duels by Cbgssya

Misc: No complete sets, just a collection of random decks from different comic books created over the years.

Batman Epic Duels by Robert Moore. (These aren't the original PDFs, but should constitute the whole set.)