There are plenty of cards to choose from, so lets see what list Ive come up with of potential cards to put in the deck
Strengths and Weaknesses The best part about this deck is that almost all creatures fly and contribute to the same game plan
If one of the creatures is an illegal target and the other one isn't as The Earth Crystal's last ability tries to resolve, the original distribution of counters applies and the counter that would have been put on the illegal target is lost
The Balrog, Durins Bane This card scales quite nicely depending on the power level of your Commander deck
Glarb is the one legendary Frog that I haven't built a deck around, but this Frog Wizard Noble should be a solid addition to this list
That will buy you more time to try to get Level 3 here, which youll want to do, because it will effectively start drawing you cards if you can double spell