This set screams nostalgia with a new coat of paint
Design a cute grass-type creature card for a classroom reward deck, friendly leaf mascot, simple 80 HP stat line, kid-safe move names, bright green border, and printable text
This helps to play around with effects that can negate a summon, as you never used the effect and can try again with a different copy of Dormouse
Now, the downside is that this wont happen unless for Blue Eyes Chaos Dragon unless you use Blue-Eyes White Dragon as a material, but both of the ritual spells I mentioned a minute ago make this pretty easy by letting you send Blue-Eyes from either the deck (Advanced Ritual Art) or the hand, field or GY (Chaos Form) To top all of this off, if you just want to make the deck about getting out the Chaos Dragons, the Impcantation cards are perfect for the job
However, it can be a hard one to get a hold of for that exact same reason