Reserved List Booster Boxes While everyones definition of a vintage booster box will vary, main set releases from Alpha to Urzas Destiny are the only ones that contain cards from the oft-cursed Reserved List
Hellkite Tyrant This is another personal favorite of mine, one that I feel so strongly about that if youre running any sort of Dragon synergy or artifact token-based decks in red, this is a must-include
Koh, the Face-Stealer is a big 2-for-1 with a bizarre activated ability
With an old, rare card like this one that has never seen a reprint and hasn't ever been valuable before, the number of copies in circulation is likely to be very low
It has impressive offensive and defensive potential
Many Equipment cards in the sets based on Zendikar deal with the Landfall ability, either actually having Landfall or synergizing with it