Milling them out should be a breeze if you manage to set this up
I can use it to either get 3 Dark monsters in my grave for Dark Armed Dragon, Red-Eyes Wyvern and/or Red-Eyes Darkness Dragon, add any cards I might need Red-Eyes Darkness Metal Dragon to summon such as Flamvell Guard or Exploder Dragon, or just thin my deck by throwing a bunch of no-longer necessary cards into the GY so that I can get to still-needed cards more easily
Collector exception : cards valued for art (SARs, full arts) recover faster than playability-driven cards
EDIT: Swapped Alolan Ninetales for Weavile, though I may switch it back if I end up getting another female Sneasel while hunting a male in Gen
This card could very well retain its value quite well overtime, and its a cool looking card
They are restricted too, so also only one copy can be in your deck