[@Alternax]

Well, the Guardians would all be custom, naturally. Each player only gets one that they create themselves, and they can vary greatly between a Level 1 Monster with a clutch defensive effect or a Level 12 monster with a powerful gimmick that effects all players.

Duels would be done post-by-post. Players can opt to use Random Thing Picker or a random number generator to decide the cards they draw and whatnot and/or they can use PiratePad. It depends on what people would be most comfortable with.