Normal Monster Cards have a yellow card frame, and, starting from Starter Deck: Link Strike onwards, include the designation "/Normal" on their Type/Ability lines
a deck that wants a Starfield Vocalist should already play cards like Displacer Kitten and Thassa, Deep-Dwelling
While its better known as an interaction spell, stapling any amount of mana acceleration to a 2 mana counter is ridiculously efficient, and there are only a handful of counterspells in the game that would be considered better even after 30 years
Imagine an opponent has spent 10 minutes putting together a huge turn and just cast Finale of RevelationFinale of Revelation to draw their entire deck and end the game on the spot
Cast dramatic reversal with at least 2 mana-producing rocks
That said, if you want to play Sultai Midrange, I'm not even sure that buying the Golgari Midrange Challenger Deck is worth it since you're still going to need $400 of cards to end up with the optimal build of the deck