Squirrels have a few typal lords to draw from, and some token generators too
Acorn cards will also be those in Un-sets that may be difficult to balance for competitive formats. As seen with Killer Cosplay, the issue with its tournament play is its complexity, as it requires players to know every mana cost in MTG
However, remember that value will likely decrease for each subsequent edition
Also, when people refer to bulk, they generally mean unwanted common cards that they have no use for because they have so many
While you control it, cards that are "decorated" (which the card uses to refer to cards with "premium" foil, alternate art or frames, and promo cards) have a miracle cost of one snow mana (which means that you can play the card for one snow mana if it's the first card you drew that turn)
Stick your custom card on with double-sided tape if you want a temporary option