Strategy: Ramp into Waking the Trolls by turn 4/5. When using Roiling Regrowth you preferably want to sacrifice pathways to bring in more basic lands in case you need to play Phylath, World Sculptor.  Ideally have Alrund's Epiphany available to skip the opponents turn before or after stage 3 of Waking the Trolls. 

Best case scenario is to have the following card in hand during stage 3 of Waking the Trolls:

Cast First Day of Class at upkeep, before the trolls enter the battlefield so that they'll have +1/+1 counters and haste for game. 

*VERY IMPPORTANT!!!: Make sure to turn on "SHOW PHASES" in options and "HOLD FULL CONTROL" at Draw Phase to ensure you will be allowed to play First Day of Class before the trolls enter the battlefield. Otherwise the trolls will just come out and you won't be offered the option to play First Day. You'll miss the timing and not be able to give the trolls haste. *

Bonus: Casting First Day of Class in this scenerio can be mana efficient. You'll still have enough mana to cast Teachings of the Archaics for draw if the troll attack doesn't end game or Expanded Anatomy to add +3/+3 counters and vigilance to a troll or a bird.

In case the ideal combo doesn't happen soon enough: To keep this deck from being completely jank here are some options:

3 Frost Bite included for early game creature or planeswalker removal.

2 Shatterskull Smashing for mid or late game creature or planeswalker removal.

Don't be ashamed to play Alrunds Epiphany to for an extra draw and some bird blockers.

First Day of Class Synergies:

If you've managed to ramp 7 mana, First Day of Class into:

Tanazir Quandrix will come in with two +1/+1 counters because of it's doubling effect when it enters the battlefield. If you happen to have some creatures on the battlefield from previous turns, all creatures can immediately swing in at Tanazir Quandrix's power and toughness because First Day of Class grants haste to Tanazir.

Here's a video of the Tanazir clutching a win at the end: First Day of Class into Tanazir @ 6:00

If you've managed to ramp 8 mana, First Day of Class into:

Phylath, World Sculptor + at least 4 to 8 tokens each with +1/+1 counters for a decent swing or set of blockers.

If you've ramped 9 mana, First Day of Class and learn for:

The Mascot tokens come out with +1/+1 and haste for a decent swing or set of blockers.

Here's a video of top decking First Day of Class into Mascot Exhibition for the win vs Dimir Control:

Top decked First Day of Class @ 7:19

Alternate win con is swinging with the new creature lands from the Forgotten Realms set if the opponent wiped your board or controlled you.

This deck will most likely lose to mono white and mono green aggro. Stage 3 of Waking the Trolls isn't that great if the opponent is also playing ramp, because you won't be able to create a vast enough difference between your land total and theirs. It bricks sometimes because I'm not that great at constructing a mana base yet.