Many cards require an opponent to have more resources than you, and don't work if you have the most
If I was building Izzet Lessons with an infinite budget rather than on a zero rare / $30 budget, the non-land cards in the deck would look almost exactly the same, but the one place the deck would get a massive upgrade if budget wasn't a concern is the manabase, which is currently one tapped dual land and a bunch of basics
Caesar leans into making a lot of little creatures fast taking advantage of Anim Pakal, Myrel, and tried and true Darien and really showcases on blacks desire for sacrifice and reds need for Burn
Space-Time Anomaly can do the same, although that one is based on your life total, so getting it out early (before you start taking a lot of damage) is best
Whenever one or more creatures damage you
With this card, you can have a toolbox of powerful equipment in your deck to look for whats best in each situation