I am Gencochi, the card store
But the truly desirable Reserved List cards are from an era of Magic design where things were quite different than they are now, and many of them are powerful in odd and unique ways
Specifically drawing cards in white is usually tied to your creatures or lifegain and only in small amounts
Yes, it's a little mana-intensive at pretty much three mana per activation, but the ability to cast anything at sorcery speed while only taking up a land slot is absolutely huge
Bans in various formats supported by Scryfall Border color (white-bordered, gold-bordered) Funny cards (Silver-bordered and other black-bordered promotional cards, like the Heroes of the Realm cards
With strong enough creatures like Zareth San, the Trickster or Halo Forager, you can focus on just allowing one creature to deal combat damage and buff it with unblockable effects