Its a silver-border commander from the Unsanctioned , for fun un-set, so you can only run it if your playgroup is OK with it
Momentous Fall, Greater Good and Life's Legacy demand the creature to die, so it is important to know when we can kill our commander to have more cards in hand
The harmonize cost isnt particularly hard for us to get to, but well typically want to be attacking with those creatures, not using them to deal 2 damage
That remains to be seen, but those of us who enjoy the format will find at least one deck to gravitate towards, and those of us that have a tendency to collect a few at a time will be well satiated
Emerald characters also tend to have keywords like ward and evasive, which make interaction through actions or challenges a nightmare for opponents
If you see Olin with your leader ability, you can put her at the bottom of your life and do a wonderful surprise at the end of the game