mtg how many instants in a commander deck MTG: Duskmourn Magic: The Gathering Strixhaven Commander

There are 5-star ratings attached to each individual card, but they seem mostly arbitrary

Ive heard a lot of people saying that this shouldnt cost 8 mana, but I dont think that there is any way to justify an effect that multiplies all of your attacking creatures by the amount of opponents that you have being any cheaper than this

For five converted mana, you get a 5/5 creature with a host of abilities

1 Aphetto Dredging

A set booster box also costs $275, but the expected value is $9053.3 times the cost of a box, which is way higher than draft boosters and a little bit higher than collector boosters (cost: $400, expected value $1,286, 3.22 times the cost of a box)

While having each deck correspond to a single game is thematically tight, it doesnt make the best use of each Commanders strengths