Dies to Removal

4 Elvish Mystic
4 Kiora's Follower
1 Sylvan Caryatid
1 Rakshasa Deathdealer
4 Yisan, the Wanderer Bard
2 Courser of Kruphix
1 Grim Haruspex
1 Reclamation Sage
1 Pharika, God of Affliction
4 Polukranos, World Eater
1 Nylea, God of the Hunt
1 Nylea's Disciple
4 Prophet of Kruphix
1 Arbor Colossus
1 Sagu Mauler
1 Soul of Ravnica
1 Hornet Queen

2 Chord of Calling
1 Murderous Cut

4 Opulent Palace
4 Temple of Mystery
4 Llanowar Wastes
4 Yavimaya Coast
2 Polluted Delta
2 Forest
2 Island
1 Swamp
1 Nykthos, Shrine to Nyx

3 Negate
2 Setessan Tactics
2 Kiora, the Crashing Wave
3 Nylea's Disciple
1 Courser of Kruphix
1 Hornet Nest
1 Doomwake Giant
1 Reaper of the Wilds
1 Reclamation Sage

So this deck is busted. Let's describe a game. Turn 1 elf, have a tapland, still turn 3 Yisan. Miss land drops against opponents accelerated PolyK+Sarkhan. Careful planning along with Yisan+Prophet lead to grabbing Disciple and going from dead to 1 life. Next turn mainphase tutor for mauler. Pass untap, get attacked by Sarkhan, tutor for hornet queen, block with token. He flashes in Surrak, I charm having Mauler fight surrak staying at 1. For the next 5 turns, he draws a 3rd surrak and accumulates approx. 30 Power worth of creatures. I however have another yisan doing it's thing grabbing knucklebaldes and arbor colossus as blockers, Imposter cloning disciple for a sizable chunk of life gain, and wrap it up with Nylea Pumps plus Hornet evasive beatdown.

Aka, shenanigans.

Adding 1 rattleclaw mystic gives your more nutdraw options.

We're talking turn 3 Sagu mauler.

Edit: I guess I've changed my mind on chord. Realized there's nothing left like Zegana so the deck needs more searching to make up for lack of raw CA.

In lieu of the fact that you predict(mostly correctly) that red is good at the beginning of the format and a bad matchup, you should just run 3 nylea's disciple in the board. All of my green decks have 4 Polyk's and Disciples in the seventy-five as the're the best early threat and sb card in the color. That's really just a nit-pick though.

I'm not sure how much I like chord. Yeah, you have relatively good chord targets, but it's just REALLY expensive.

I think Xenagos is worth an inclusion. Just gives you something else powerful to play early and lets you go nuts later.

Arbor Colossus deserves a slot in the seventy five, probably in the main. Surrak fights counters well sure, but Colossus fights Sarkhan, Stormbreath, and Butcher of the Hordes which people are sure to be playing. Wether or not his is more important then surrak ALSO giving trample and having flash is more...dubious.

Lastly, I'd play 1
nykthos at least. It's just randomly powerful. If I added a nykthos, it would probably be as a 24th land since it doesn't actually fix your colors.

Overall, I think this deck is one of the better brews I've seen put together and I'm adding it to my gauntlet.