if this card is in your opening hand mtg Gimme a Rules Text: opening, hand, 31

Preventing cards you dont need from ending up in your possession stops your collection being ridden with cards youre never going to use

Now, it's quite likely that picking a strategy has already narrowed this down for you

They most often see play in the first several turns of the game as players are jockeying in the early game

I could go on, but it's up to your creativity

Basically you don't have the picks spare to be able to consistently pick up all the important cards you want for your Izzet deck as well as the lands to support three colours

However, Urza will be teaming up with a much more reliable planeswalker threat to keep control afloat: Teferi, Temporal Pilgrim