The amount of life you gain is incredibly high, making it much harder to be taken out of the game short of commander damage.
Here again, if you are looking to generate value by discarding stuff, you're almost certainly going to be better off discarding Voldaren Pariah, Prized Amalgam, or Haunted Dead, which makes it difficult to see a realistic role for aftermath in constructed
7 Jolteon (Master Ball Foil) $71.97 A Shocking Placement It's rare to see Jolteon valued so highly among the most valuable Terastal Festival chase cards, as it isn't typically a guarantee to be included among them
Hatenna (005/015) Alongside Quagsire, Hatenna is one of the least valuable cards on this list
Basics of Deckbuilding Create a solid deck by remembering the basics of deckbuilding: Make sure that your mana curve is right
Those last two don't sound like big drops, but since these cards were close to the $1000 mark, those percentages account for hundreds of dollars of lost value