• -2 island -1 Mountain and add 3 Highland lake, Which is in the deck builders toolkit and not in any of the standard sets.
• A hard tempo deck that closes the game fast with huge creatures.
• There are budget options, I did run it almost rareless at one point, but this is the current version I run.

How you play the early game depends on what your opponent is doing. Typically you want to start loading up your graveyard by using your spells defensively.

Always bolt the birds... or destroy the druids and try to tag attune with aethers with spell piece. Keep your opponents off balance as much as you can.

Try to find a place to play riddleform that will allow you to set back with counters and scry end of turn and get in with damage when you remove opponents creatures with burn or bounce.

Casting two spells a turn cycle is your goal in the mid game. 

You want to be able to drop your serpents and drakes with protection.

You want to activate riddleform, attack then draw two with chart a course to get momentum if you are ahead in the game.
 
Dropping chandra on an open board is also a worthy goal.  Remember that her +1 gives you mana to achieve that two spells a turn goal.

If you are on the back foot without a threat in play you are going to not want to activate the riddleform into open mana, but instead keep up counters and use the scry to find bigger harder to kill threats.

You need to have a counter ready turn 4 onwards because all the gods are hard to deal with (and hydra's)

Late game your drakes typically have a lot of power even cryptic serpents are big enough to outrace even Hazoret.

Against decks with scarab god you are unlikely to win a late game so you want to close on them fast.

Burn is your best friend. Start pointing your spells to their face as their creatures are either too big to kill or too small to worry about.

Don't forget your deserts! they can eek you wins in otherwise difficult situations.

Sideboarding guide. You side in a lot of cards typically.

vs aggro.
In: Abrade, Chandra's defeat, sweltering suns, hour of devastation, glorybringer
Out: Spell pierce, Censor, Chandra, 2x Chart a course

vs midrange
In: Glorybringer, vizier, abrade, chandra's defeat/search, hour of devastation,
Out: Spell pierce, shock, censor

vs Control
in: Glorybringer, vizier,  negate, search for azcanta
out: Shock, unsummon, censor

Yes I side out censor every time.
You can use chandra on the play and glorybringer on the draw in aggro match ups.
Change it up on the fly when a card is more relevant or not, with practice you'll know.