heroclix booster box Marvel HeroClix: Wheels of Vengeance Brick and surprises in 12 boosters Marvel HeroClix: X-Men '97 Booster

While this isnt really economic, and Im not 100% sure you can even trade the cards you get from the theme deck, the one theme deck worth getting is the Emboar one

By playing enough of both, you'll be passively gaining lore, draining your opponent, and have a board state that will be very tricky for your opponent to unpick in time

However, many shapeshifters have abilities that turn them into copies of other permanents

BT5-088 R Tamer Alternative Art Sora Takenouchi & Joe Kido Color Blue Cost 4 Card Text 1 [Effect] [Start of Your Turn] If your opponent has a Digimon with no digivolution cards in play, gain 2 memory