I fondly remember, on my first visit to Japan, spending days navigating the impossibly complex underground system to try and collect stamps at specific stations, so they could be turned in for promotional Japan Rail Pokmon cards
Yes, I did fall for the whatNot trap
Then the Edicts like Fleshbag Marauder on sticks are all here since they will sacrifice your stuff or themselves and then Edict everyone else too, so you can get a great removal effect that counts as descending for you too
It turns out that Magic players love casting spells for free, even if free in this case is pay seven mana for an artifact and cross your fingers you overcome the randomness to get what you want. The silver lining, of course, is whatever spell youre copying from your graveyard gets to stay there on the chance youll copy it again, unlike many cards of this ilk that exile the spell following the resolution of the copy trigger, so if you can find a way to finesse only one legal target for the Crucibles trigger (perhaps by ensuring the top two cards of your library are lands with something like Senseis Divining Top), then youll get to copy the same thing over and over
If you're enjoying the color-by-color breakdown, be sure to check out my Top 5 Green Cards, Top 5 Black Cards, Top 5 White Cards articles for more deck ideas and evaluations as we prepare to summon our favorite legends to the Commander table.
Going back the original example many paragraphs ago, let's look at the two cards you milled away: Milling the Gearhulk, if they are playing a Constructed deck, is likely an indicator they have even more Gearhulks