I respect leaving some evolution lines incomplete due to their final form not being available in Gen 1 (Onix, Magmar, Tangela, etc.), but dont leave a Gen 1 evolution line half completed
Valley Floodcaller's second ability applies to noncreature cards in any zone, provided something is allowing you to cast them
Other monsters you control cannot attack, also if you have any number of "Blue-Eyes" monster(s) in your GY, the equipped monster can attack up to that number of times during each Battle Phase
Since Brionac, Dragon of the Ice Barrier effect is not once per turn, it could repeatedly bounce Premature Burial after Special Summoning Rescue Cat , and this would quickly turn into a board of Synchro Monsters on your field
XY Evolutions boasts one of the most expensive booster boxes from the X&Y era due to its fantastic homage to nostalgic Pokemon