Chart shows the price of Wicke #147 at the end of each month going back as long as we have tracked the item.
Opportunity is even better

* Only 1 filler is known to have two Triangular Holofoil Stamps: - White with Two Triangular Holofoil Stamps Filler Card * Only 12 fillers are known to have Gold or Yellow coloring: - Black Border Gold Foil with 3 QR Codes Filler Card - Black Border Yellow with 3 QR Codes Filler Card - Black Border Gold Foil Discard Filler Card - Black Border Gold Foil Discard with Triangular Holofoil Stamp Filler Card - Black Border Yellow Discard Filler Card - Black Border Yellow Discard / Black Border Yellow Discard Filler Card - Gold Foil Discard Filler Card - Gold Foil Discard with Triangular Holofoil Stamp Filler Card - Gold Foil Discard / Dividers Filler Card - Yellow Discard Filler Card - Yellow Discard with Triangular Holofoil Stamp Filler Card - Yellow Discard / Dividers Filler Card * The oldest filler is probably the Alternate Fourth Edition Filler Card Version 1, while we don't have a precised month, it has been verified that The Alternate Fourth Edition cards have been printed after November 20, 1995 by the United States Playing Card Corporation in Cincinnati in a first attempt to produce Magic cards on US soil

The following ten cards are not only the hardest to find, but the lucky few who find a listing may just need to take out a second mortgage to afford one
#7-4 - Incandescent Soulstoke, Flamekin Harbinger, Risen Reef, Smokebraider/Flamebraider These next 4 are what I call the "Auto-Includes"
There are so many impactful permanent cards at low mana value that you can recur from the graveyard