You can of course use Doubling Season to make tons of tokens on the battlefield, theres likely a better way to put this enchantment to use
With Avenging Hunters higher power and trample ability, your chances of taking the initiative from your opponent are pretty good
A Jeskai Control deck with Think Twice and Serum Visions can probably get away with playing slightly fewer lands than a R/W Control deck with no card advantage or filtering (which is why the R/W Control decks plays four copies of Simian Spirit Guide)
Sauron is expensive for a commander, and without the land ramp afforded by green, you'll need to run a lot to mana rocks to play him early enough to matter
It seems like multiple Lord of the Rings cards with art by the Hildebrandts, including River Keplie, Abyssal Persecutor, and Seasons Past, have all become much more costly in the last month or so