In theory, this puts a reprint of Equinox on the table, especially with all the land synergies, but thats not guaranteed and seems rather unlikely
For long-term value: High Class Packs (released annually in December) have historically appreciated after going out of print
I remember before they were a fairly reliable source for prices, but they might obsolete now with eBay and whatnot
And while this card is in your graveyard (you know, after you just discarded it) you can send another spell or trap from your hand to the graveyard to bring this card right back to your hand while also special summoning a Zombie monster from your hand as well
Will you shift to collector boosters or stick to singles from here on out?
As the price of cards has risen, so too have the potential outcomes, and therefore, the buy in cost