Because those spells contribute to the energy engine around which the deck is built
Edward Kenway is a card that enough people want, so the price has risen
Until then, just play a deck filled mostly with the good Steel stuff and keep Helga out of it
Just dont be surprised if you become the threat once opponents learn you run this card, whether its anywhere near the battlefield at the time or not
This card lets you play lands from the graveyard, which means that you can replay your fetch lands as often as youd like, but it also lets you replay lands you have to sacrifice or just help make self-mill a more viable strategy
Dream Twist, Mulch, Deranged Assistant, Forbidden Alchemy, Armored Skaab, and Civilized Scholar are typically the best options but Ghoulcaller's Bell can also be a fine addition