The only problem you'll run into is his Zapdos cards because they are resistant to Fighting
Within the Naya world, I think that a split of Carnage Tyrant and Ajani Unyielding in the maindeck is reasonable, given how often Carnage Tyrant is your best sideboard card
There are: Sol Ring (Human): 9,000 Sol Ring (Dwarven): 7,000 Sol Ring (Elven): 3,000 Sol Ring (Double Rainbow Foil, Human): 900 Sol Ring (Double Rainbow Foil, Dwarven): 700 Sol Ring (Double Rainbow Foil, Elven): 300 The Elven, Dwarven, and Human rings all feature different art related to their respective tribe by artists Randy Gallegos, Erikas Perl, and Anastasia Balakchina respectively
Hating on lifegain decks, this is a pretty sweet way to get some extra damage in to your opponents and close out games much quicker than you otherwise could