When Asmoranomardicadaistinaculdacar enters the battlefield, you may search your library for a card named The Underworld Cookbook, reveal it, put it into your hand, then shuffle
Based on how your deck is built, you could also make Aetherborn Marauder quite large if you have some +1/+1 counters
Theyre most commonly used for casual play, playtesting, and formats like Commander or Cubeespecially when you want to try a deck before buying expensive cards (or when youd rather not shuffle your rent payment)
Would you pay about $3 for the card in question
Now, one of the flavor things that Adun is exploring is not a traditional Black flavored form of reanimation
A great example is Gum-Gum Giant