Some Fusion Monsters in Rush Duel have new Types thematically based on the Types of the Fusion Materials used to Summon them (Cyborg, Magical Knight, High Dragon, Celestial Warrior, and Omega Psychic), and have a new type of card effect called a Multi-Choice Effect, allowing their controller to activate one of two effects each turn
I probably would have made more selling them at a yard sale
Card not found (uncommon) has roots in cards like Card not found, but this is the first time it looks at the MCM
Given the popularity of mono-red aggro in Pioneer and Boros Energy in Modern, using your life total as a resource is extremely risky
Raging Destruction lets them search (as well as discard) a huge 8 cards from the top of the trainer's deck and attaching any Fire Energy that one finds
And to be honest, I just found it quite enjoyable to expand my collection continuously, and don't consider it to be monetised in an overly blatant way, nor disturbing in the way it's structured