These colors tie to treasure creation, payoffs for spending mana from treasures, and artifact sacrifice
Angelic Gift, Feather of Flight, Rune of Mortality, Scourgemark, Unquestioned Authority, THIS IS MY SECRET SAUCE
Its not all fun and games, though: Cold exposure can be downright deadly
Also regarding interacting with what comes from the Exile, we use several cards that bring support to it - Nalfeshnee and Mizzix, Replica Rider to copy our spells, The Lost and the Damned to create more tokens, Passionate Archaeologist and Keeper of Secrets to deal damage to our opponents directly, and, to indeed make these spells happen from the Exile, we have Etali, Primal Storm and Plargg and Nassari
I removed several Faerie creatures, like Brazen BorrowerBrazen Borrower, Mocking SpriteMocking Sprite, and Nightveil SpriteNightveil Sprite, which aren't necessarily bad cards, they just don't work in our deck
Primeval Bounty Green has a robust selection of landfall cards that kick off with the big green enchantment Primeval Bounty