The moment you understand that math, you understand why collectors pay 50,000 for sealed S8A stock
Etherium-Horn Sorcerer provides an excellent mana sink that can Fog a creature and synergizes with artifact decks
The payoff of this meld pair, doesn't win the game on the spot, and I'd stress that to your Bracket 3 playgroup because while this deck puts together powerful cards, it is not optimized to be unbeatable, and more focused on a huge play with some Golgari death and graveyard interaction molded in
Louisoix's Sacrifice BPhillipYork: This is a really solid counterspell, the ability to counter activated and triggered abilities for 1 mana in a pinch is really solid
And so the need to tweak that "perfect timing" with the usual control toolset, plus a healthy prediction of what card will hurt your battles the most for a particular matchup
This type of error is generally considered significant damage, affecting both the cards appearance and value