I should find a Farhaven Elf and stick it in here. I'm sure it will prove itself useful.
I am also strongly considering moving Mystic Reflection from Kadena into this; it just seems like it would be bound to come in handy at some point and might even be a beating in the right situation. 
Also? I think some more green/blue or white/green lands would be smart - Simic especially. White is actually the lowest concentration among the three colors so I'm a bit worried about mana problems.

Looking over the list as it stands, there's some changes I made over the weekend that aren't reflected here - Prognostic Sphinx is in but I don't remember what I took out. The Sphinx is pretty important as the Phile obviously requires a specific amount of cards in hand.

Alright! Here we go - we're shooting for the Triskadekaphile win with this deck. If Roon can't cut it, we can try putting Chulane back in charge, but I think Roon will be able to abuse a fair amount of the ETB card drawing effects and get me a fistful of cards. Once that's in effect, I cast the 'Phile, along with either Nezahal (if I'm over by a multiple of three, I guess) or Prognostic Sphinx (which gets hexproof from the discard, so that's nice) on the opponent's end step to get the win. Flawless plan. FLAWLESS.