The Bird creature subtype has plenty of cards from older sets that might suddenly matter more with Zinnia - it's worth looking through resources like Gatherer to find them
While none of these lands are Forbidden Orchard, you get a couple of Magic 2010 buddy lands, a couple of pain lands, and a couple of tri-lands, most of which are a worth couple of dollars, and these cards have already been reprinted into the ground, so its unlikely that they drop too far based on the increased supply from Commander 2016
Like Return of the Wildspeaker, you can pay five mana (if you foretell it) to draw a ton of cards if you have a big enough creature, and like Inscription of Abundance you can gain lots of life while you're at it
That said, we do have enough data on most of these cards and the themes of upcoming sets to be reasonably sure about the biggest hits
Cons: If a villain meta ever comes around, the hero synergy of the deck will feel pitiful
You can find this deck here - Commanding Odric with Crimson Vow | Article by Abe Sargent (coolstuffinc.com))