And all these cardsexcept the oversized Planechase cardscan be found inside Collector Boosters, not to mention cards with the TARDIS showcase treatment and a bunch of shiny foils
A clean sealed Kanto card set is a different object from an opened set with the same three cards
Besides the obvious synergy with Toothy, Imaginary Friends +1/+1 counters and card draw, Pir can really increase the effectiveness of planeswalkers, oil counters, and vanishing creatures
Important stuff, variants on the deck, weakness and key cards
One quick note: make sure to buy extra of both the inner and outer sleeves because while your cards will be protected, it doesnt mean your sleeves won't suffer some damage
You can still run cards like Mana Confluence that would abide by the color identity rule normally to fix this, but the amount of lands that fit in this category are rather limited