This makes it a very useful support and defensive card, assuming you can get your hands on it
You can lean harder into pure Storm, focus more on Dragonstorm, or build a spellslinger deck with dragons as the payoff
3 and Black Mage's Rod give you ways to deal damage to your opponent each time you cast a noncreature spell, which will chip away at their health
Tromokratis can't be blocked unless all creatures defending player controls block it
Here are my decks for the first 7: The first was built around Hidetsugu, Devouring Chaos - Commanding Hidetsugu, Devouring Chaos | Article by Abe Sargent (coolstuffinc.com)
Earthbending a creature also means you can sacrifice it to something like Zuran Orb and have it re-enter immediately, which is a separate combo that also results in various infinites