mtg cards like expedition map Print Pictures at an Expedition: Map

It can swarm the battlefield with Urza's effect and turn all your artifacts into mana dorks to pay for both Urza and various spells easily

It is far from the best five drop stand alone threat you can find however it still very much needs dealing with

Shout out to the sacrifice spells that draw you power like Life's Legacy, a sorcery at two mana and then the instant Momentous Fall that also gains life

Thats why cards like Skullclamp, Horn of Greed, and others are especially effective in these decks

At the time, Magic: The Gathering didn't yet have a formal block design, and the designers wanted to make the game an anthology or treat it as a collection of similar games rather than a cohesive whole, so the fundamentals were open to change