You can't animate your junkyard or your scrapyard
Each card commemorates a unique achievement in Pokmon competitive game [1]
Its much simpler than grinding random battles
However, due to localization decisions, a number of errata are first in order: (It is meant to be [Insect/Flip/Effect], but the Classic Maker cannot display the Flip tag.) (In addition to altering the name, effect is altered to hopefully be less ban-worthy.) For the sake of brevity, the errata to the "Melffy" archetype shall not be shown, but understand they would be altered to "Mrchenffly" (Mrchen being German for fairy tale)
It and its soulbonded creatures give you cards when they die, which is a bonus on top of the big body
This deck is no doubt going to feature lots of mana ramp - likely in the form of sacrificing 0/1 Eldrazi Spawn tokens to generate quick mana and play huge creatures