If all goes well, you ramp, created a token, and fueled your graveyard for more action in this very active Sultai card
As a Green creature and one that comes down cheaply, Realmwalker is made for decks exactly like this: creature-based decks that want to lean into a tribe lacking traditionally powerful options
Starfield of Nyx was created as a build-around card that would allow people to use all their Theros cards to make a new but thematically connected deck
City of Brass has seen multiple printings since it isn't on the Reserved List, but its original Arabian Night printing is far and away the most expensive version of it while other versions generally float around the $10 range
Cramped Vents // Access Maze gives you a way to gain a lot of life at once, which can help you stabilize, and the other side allows you to spend life for mana
Fatal Push was a bridge between the two in many ways, as it was able to be played on turn one or two, while also being able to handle bigger creatures most notably Tarmogoyf and Thought-Knot Seer at the time