Greens primary form of evasion is trample, which youll see offered by plenty of green commanders like Ezuri, Renegade Leader or Goreclaw, Terror of Qal Sisma
Ive had a lot of fun piloting the mill version of this deck (which wins more often through combat than mill these days!), so if you still need convincing, check out my decklist out for yourself here
You can use the Virtue of Strength from Wilds of Eldraine to triple your mana from basics and get Progenitus out a turn or two earlier
Yawgmoth comes to mind, especially the build running Birthing Ritual and token generators
Merfolk is a relevant Creature type if youre already messing about with them in Commander, but its not relevant to why this card is so good
With the limited release, holographic art, and strong banishing ability, this card is an exclusive thats tough to find