Trail of Crumbs ties everything together, both generating food and allowing you to turn food into cards
If they never see any new cards, and dont have any answers to your threats on the board, you can effectively stop them from playing the game
There are no special promo cards added for this event, and all cards in this mass outbreak are also obtainable from the Genetic Apex and Mythical Island sets
Ichor Wellspring ain't no proper egg in that sense (it has no built-in sacrifice ability), but assuming your deck hangs out with an entourage like Braids, Arisen Nightmare or Daretti, Scrap Savant and you can reanimate artifacts, you can draw a lot of omelets with this one
Availability is the bigger practical split
One stage above Misdreavus, this evolution has 140 HP and has one simple move thats unique to Mismagius