The reason that people are not playing with Heros Downfall as much as they probably should be is that the 1BB mana cost is extremely taxing on a mana base that also wants to have 2UU for Jace, Architect and 1UWW for Supreme Verdict on turn 4
There really doesn't feel like there is room in a cube for more than one creature only one mana bounce spell even in a 720 cards cube hence the other two very comparable cards not even making this list
In this article, Ill highlight my top 10 cards from Duskmourn
Illustrator: Kagemaru Himeno Furret #129 Furret (1-Diamond, Common rarity) is the #129/234 card from the Fantastical Parade set in Pokmon TCG Pocket
Here are the cards you need to collect for the 'Pikachu Museum' secret mission: Pikachu #128 (One Diamond) or Pikachu #129 (One Diamond) Pikachu ex #131 (Four Diamond) Pikachu ex #132 (Four Diamond) Pikachu ex #364 (Full Art / Two Gold Star) Pikachu ex #376 (Immersive / Three Gold Star) Reward: Pikachu emblem
"It's to make like, you know, 50 bucks here or 20 bucks there