These decks are designed with a first-time run in mind. Once you've gone through the game and gained some better cards, feel free to switch out Slashes with Heavy Attacks, Durandal's with Elysions, and so on.

Character - Any

Attack x 3
Slash x 3
Stab x 3
Heavy Blow x 3
Mighty Knuckle x 3
Assault x 3
Spirit Boost x 3 (AKA Split Boost)
Guard x 3
Dodge x 3
Reduction x 3

Strategy: Like the title to a classic arcade game/NES game, Rush 'N Attack. All three main characters can use this deck just fine, the AP difference is negligible, and Poor Castor won't be able to keep up with the constant damage you'll deal.