DedWards

I strongly suggest working in some "Anthem" effects. Honor of the Pure and Spear of Heliod come to mind.

Staff of the Sun Magus isn't that great for two reasons. Firstly, it costs {3}, on turn 3 you want to be playing creatures. Secondly, it only triggers when YOU play cards and only for cards played AFTER it was put onto the battlefield. Replacing this with an Anthem will help a lot. Remember, you only have one creature that truly gains from the life gain.

Ajani's Chosen isn't doing much with only 7 enchantments in the deck. I'd replace the Leonin Snarecaster and some / all the Pride Guardian with more enchantments.

Going heavier on Enchantments, Ethereal Armor is a must.

The Aura named Lifelink is OK, but Spirit Link does the same job, just better. Where the ability Lifelink doesn't stack, ie multiple instances of Lifelink don't gain you multiple times the life, because of the way it's worded, Spirit Link does stack.

Ordeal of Heliod is pretty good too (10 life and three +1/+1 counters).

Spirit Mantle is a great way to get damage through.

Then you can also go the Pacifism route. There's a number of white enchantments that work like removal spells (Pacifism counts as a form of removal). My favourite Pacifism effect is a card called Temporal Isolation, mostly because it has flash. Then there's enchantments like Oblivion Ring that exile permanents.

No, it's not. I found this deck watching YouTube:

https://www.youtube.com/watch?v=UNj1w6aaenw

The current build looks a little slow, and you have no way of fetching your pieces. Kiki-Jiki costing {2}{R}{R}{R} and Titan costing {4}{W}{W} is concerning (especially Kiki's 3 red). The fact that it requires so much of the same colour mana can cause problems. Bring to Kiki gets around this in two ways: Firstly, the mana dorks not only ramp, but also colour fix; Secondly, Bring to Light doesn't care about the colour, just total converted mana cost.

As for protecting the combo, you're already running blue, so counter spells and hexproof (even if only from sideboard) are great ways to protect the key creatures. White also supplies potential protection (again, even if only from sideboard).

I don't know if you know of it, but I kind of like the Bring to Light into Kiki-Jiki deck I saw a while back. Basically main GU with mana dorks that can add any / multiple colours (Birds of Paradise, etc) into Bring to Light to fetch Eternal Witness (returning BtL); then BtL into Restoration Angel (bouncing Witness to return BtL); then BtL into Kiki-Jiki (copy Angel, bouncing Kik to copy Angel again and again and again...).

Manic Scribe is still a new kid on the block (kinda), so I think it's still worth testing.

I personally don't play mill, that's my friend's thing. But I do play against mill a lot. I mostly post these mill decks to see what you all think and to show my friend, so thanks for such in depth comments :D

With so many Instants and Sorceries, Thing in the Ice would be a fun addition. It's also somewhat flavourful as it takes "Time" for the Horror to crack the ice :P

Oh, that land. Seems a little gimmicky, considering the deck only has one landfall card that will die more often than not.

It's OK, a lot of people fall for that mistake. I, on the other hand, am trying to abuse the mana generated by Braid of Fire. I don't have enough of the cards yet, but the idea is to use Paradox Haze (on myself) to grant multiple upkeeps, thus multiple age counters and lots of mana.

To remedy the problem of only using it in the upkeep, I found Gemstone Array. For {2} I can put a charge counter on Gemstone Array. I can then remove a charge counter at any time to get one mana of any colour :P

The problem I'm having is what the rest of the deck is going to be. Definitely draw and search for the combo, but what will I use the combo on?

Huntmaster of the Fells and Immerwolf do not work well together. Huntmaster likes to transform every turn, Immerwolf prevents him from doing so.

I'm not sure on the effect it'll have on the speed of the deck, but Lotus Bloom is another 'free' mana source. Sadly you'll only get it on turn 4 at the earliest.

I also feel that I need to point out that the mana gained from Braid of Fire can only be used in the upkeep.

Your token production will be a little slow at first. Because it's reliant on a decent number of tokens being out, I see Second Harvest only working mid - late game, so I suggest cutting it down to 3 (maybe eve 2). On its own, Second Harvest doesn't do anything, so it'll often be a "dead" card in hand.

Press the Advantage costs way too much for what it does. Plus your 4 mana slot is chock full already (Somberwald Alpha; Pack Guardian; and Second Harvest), so another 4x four mana card that only really shines with one creature out isn't worth it (you already have Lead by Example for the double target). Also, your ratio of spells to creatures is a bit off, considering almost all your Instants need a creature to target.

Talking about lots of expensive (mana) cards, you're running way too few lands for your mana curve. You need at least 22 lands with that many 3-4 cost cards.

Here's my suggestion on what to change in order to make the deck more consistent:
-4 Press the Advantage
-2 Second Harvest
+2 Forest
+4 Leaf Gilder

I know Leaf Gilder isn't a Wolf, but it's ability will help you get the 3-4 mana Wolves out more consistently and / or free up mana to use your Instants.

Remember, I didn't design this.

That said, each "interaction" card added is a mill card removed, significantly reducing the deck's win factor. I'm sure you could probably include those "interaction" cards to the sideboard, but majority of the time you'll be winning before reaching 0 life. Remember, this is effectively an Aggro deck, so "interaction" isn't really necessary.

Oboro?

The Buyback is what makes the card awesome (you can convoke the Buyback). Remember, you can convoke using creatures with Summoning sickness too. So, at the end of the opponent's turn, with Sprout Swarm in hand, you can tap any untapped creatures you have to make even more Saprolings (you can also tap the Saproling from the previous casting of Sprout Swarm), and with Buyback, you can do it every turn.

Nice. I already have some of those. Will see how it goes once I get the other missing cards. Thanks :D

You don't. It's in here for its graveyard effect.

Because it's banned in Modern, what would you replace Deathrite Shaman with to make this Modern legal. I'm aware that the Shaman is very important, but I kinda like this and am considering getting what I'm missing, but I can only play this in Modern.

You're missing the most important Saproling producing instant: Sprout Swarm

If you choose to forego the Eldrazi in favour of big Green creatures (like Worldspine Wurm), you could use Summoner's Pact to fetch the big Green and Dramatic Entrance to put said big Green onto the battlefield at instant speed.

Alternatively, Assault Formation can supply you with an alternative win condition. Imagine attacking with Traproot Kami while Assault Formation is out :P

Holy crap, Meren is "absurd" :P

Ok, now that we have a combo to concentrate on, I can give you advice.

Firstly, as with any combo, you want 4 of each your combo pieces, this will increase the chances of drawing them every game. So 4 Bear Umbra and 4 Hellkite Charger.

Secondly, a few cards to search for combo pieces is always good. This can be done with cards that specifically say "Search your library for xxxxxx"; or "Reveal the top x cards of your library, reveal xxxxxx, and put it into your hand." or even draw and scry cards. Depending on the type and quantity of the search cards, and the combo, you could even reduce some, or all your combo pieces to 3 copies each, but never below 3.

Next, because your combo pieces do cost a decent amount of mana, and the fact that you're playing green, mana dorks (Llanowar Elves; Birds of Paradise; etc.) would be useful. I suggest mana dorks that come out cheaper, 1 mana is best, but 2 mana is doable too; and can either tap for any colour mana or for green and red, your combo colours.

And lastly, the key to any deck, 3-4 of each important card, and stick as close to the 60 minimum as possible. So identify what's important, increasing those numbers, and cutting everything that does not contribute to the goal of the deck.