Urza does have a lot going in his favor in comparison to other mono-colored decks, notably getting to actually play counterspells and Rhystic Study
Arclight Phoenix When people see Arclight Phoenix, some might think: Hey, its cute when it goes off, in Magical Christmas Land. In reality, its way easier to bin and bring back multiple Arclight Phoenix in a turn: You just need some cantrips and cards that draw and discard, like Faithless Looting or Chart a Course
Any "as [this permanent] enters the battlefield" or "[this permanent] enters the battlefield with" abilities of the chosen permanent will also work
Take a card like Shaman en-Kor
Sol Rings are easy to come by buy usually maintain a price of around $2-3 Cheaper cards like Worn Powerstone ($0.50) and Palladium Myr ($0.50) do a fine impression, though theyre obviously slower and more balanced
Casting Sauron lets you amass Orcs 5, either making a strong Orc creature token or strengthening an existing token if you already have one