Unfortunately, those topics will have to wait for a future article
Eddie Brock is a mythic rare pre-selling for around $25
Yeva, Natures Herald Surprise again
Though it might take a while to get going, the back-n-forth nature of Commander sees multiple creatures hit the graveyard each combat cycle, and with Draugr Necromancer on your side, you not only deny these fallen creatures access to their owner's graveyard, but also get the chance to bring them aboard your team
Pack RRP is $5.99 in the US, or $143.76 for the box (though technically they dont have an RRP)
Finally, we have one copy of Mentor's Guidance, which is basically two Opts for three mana, as long as we have one of our magecraft creatures on the battlefield