are pokemon cards from amazon legit of bought a "random 25 foil

The boost you get from countering a two or three drop and jumping to five or six on your next turn is a much greater swing than countering a four drop and then having 8+ mana for the main reason that you don't have that much useful to spend that kind of mana on very often and if you do it is not as significant as an earlier mana boost

If the format is all about fixing mana, casting bombs, and generating card advantage, then its difficult to justify spending a slot on something like Arashin Sunshield or Dragonback Lancer

Jace, the Mind Sculptor Jace, the Mind Sculptor is a rather unique card on the list

150 damage at the VMAX level is, indeed, a bit middling