6 Magical Abductor Magical Abductor is a fantastic card as both its monster and pendulum effects can be abused since they are both not a hard once per turn
While transforming cards are creatures on both sides, MDFCs can be all kinds
C Common Deep Sea Aria X SPELL Banish 1 WATER monster from your GY
Be gentle hereone wrong move and you could scratch the card
The story goes that some Raichu cards were accidentally mixed in with Clefable at the printing factory and were supposed to be destroyed, but some Wizards of the Coast employees pocketed a few of them (one account says 11 copies were saved from the factory, though the exact number isn't known)
Predicting collector boosters is trickier since we only get the breakdown by rarity, but we know that none of the caves are mythic, so they can only appear in the common (7 possible caves), uncommon (7), and rare (4) slots of collector boosters