Marvel: My Infinite Hero Cards

[Incorporates the world of Marvel's animated series What If...?]

Transported into the Marvel universe, Mercer thought he was destined to become just another piece of cannon fodder-until a lucky accident activated his Infinite Hero Card System.

Not only can he obtain equipment and abilities from all kinds of superheroes, but he can also acquire Travel Cards that let him journey across the multiverse.

"Ordinary people rely on mutations. Hulk, Abomination-if you've got the guts, let's see how you stack up against my Blacklight Virus."

"Stark, your tech is outdated. Take a look at my Flame Dragon Armor. Armor up!"

"Hey, God of Hammers! Want to see whose lightning is stronger? My Rumble-Rumble Fruit won't necessarily lose to you."