[@KOgaming] I have been explained due to the way they are summoned that there did need to be a change in cost, so I quickly edited that

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With its name, it is technically a Calm Dragon, but since it won't be playing off any of the Rage effects, and because it's Purpose is to benefit the coming Extra Deck, it doesn't require Calm or Rage in the name to be played. It is actually more relevant to Lock Rage Dragon, Ergo the name "Power Lock Dragon".

Edit: As for how you go about getting them, how about having the principal order them into classes? Role in the new monsters for students as they are now required in the new format? You could even say they are being early released for the school.