For players seeking specific competitive cards like Meowth ex, buying singles is significantly cheaper
The Fantastic Four You could call it tacky to make The Fantastic Four literally care about the number 4, but I find it amusing and an interesting deckbuilding challenge
Price and value for collectors The price of Pokmon 151 cards varies widely depending on rarity, condition and demand
More recently I have gone upto 7 equipment with Embercleave, Ancestral Blade and the returning of Feast and Famine (which was due to Gilded Goose being great with Swords, although I am fairly close to cutting it again and returning to 6 equips)
I dont think that these cards are auto-includes by any means, but you should definitely consider them if youre playing a mono-color deck that greatly benefits from all of the text found on your colors Crystal
All of these cards are over-costed by one mana because you get the Embalm benefit