These are just a couple of things Jorn can do in mono-green alone
You can only play Value Town from exile if it's "on an adventure," it's currently a time at which you could otherwise play a land, and you have a land play available
You need your threats to pack a lot of punch and Prophet fails to compare well to Thing in the Ice, Young Pyromancer or Stormchaser Mage
This sets up your draws on ETB thanks to scry and because the deck is overflowing with artifacts, triggering the 4/4 ability is easy as can be
Mama Odie, Mystical Maven Musical magic A wise woman living in The Princess and The Frogs version of New Orleans, Mama Odie isnt just good at giving out advice, shes also an accomplished spellcaster
However, its not just a boring typal deck that just wants to play Elementals and Elemental payoffs more broadly