Oh hey! You are probably here because of my Video!

Well, if you are just here for the decklist, go ahead and export it to your Arena.
If you are here for the sideboard breakdown, here it is!

Every card in the board has a specific situation to shine in. I’m just gonna go over every one:

Casualties of War :
Since Casualties is the best Choice for your Repeated Reverberation turn, there is one copy in the board to get if thats the piece you are missing. Don’t get too carried away by the value. Sometimes Casualties is the right play, even without the Reverberation.

Chromatic Lantern:
Sometimes you just can’t stick a Fires of Invention to the board. Chromatic Lantern is your backup.
With all the ramp in the deck, you will get to a point were you can just cast Casualties ect. with the Lantern.
Keep in mind that you do have a Golos in the deck.
In some games you can surprise the opponent with a Golos activation to overwhelm them with value.

Enter the God-Eternals:
This is your silver bullet against aggro. It kills everything from Questing Beast to Archon of Sun’s Grace and gets you a blocker and some life. You can copy it with a Reverberation but watch out that you choose multiple targets to get the most value out of it. Unless your opponent is sporting a 10/10 or something. Than it’s best to yeet all the EtGE at their big boy.

Escape to the Wilds:
If you have nothing else to worry about than value, get your Escape to the Wilds. If you want ALL the value, cast a Repeated Reverberation before.

Kaya’s Wrath:
You’ve got the Fires of Invention and need a Boardwipe? Here you go! You’ll find yourself tutoring this a lot against agressive decks.

Mass Manipulation:
Since the deck ramps hard you can just steal all the threads later in the game. I know its kind of a nombo with Fires of Invention so be careful to cast it for mana. A lot of grindy games end in your favour because of this card so keep in mind to have blue sources if the game comes down to this point.

Planar Cleansing:
Destroy everything! Including your Fires so you can use your untapped lands afterwards.
This badboy punishes your opponent into concession if they bank on Banishing Light ect. as removal. 
You might want to play Ruinous Ultimatum, it costs one more but doesn't destroy your stuff.

Planewide Celebration:
This is your get-back-in-the-game card. Gain a lot of life, get permanents back from the graveyard, get 2/2s, or proliferate on your planeswalkers a bunch of times. Tamiyo and Celebration loops since you can proliferate her, then get Celebration back with the minus ability - reperat.
Oh and also... try copying this with Repeated Reverberation. Its just unreal value.

Repeated Reverberation:
I mean you know what to do with it so try to set up the combo as soon as you can.
If you copy a Fae of wishes (Granted), you should get your Reverberation as one of the 3 cards.

Chandra, Awakened Inferno:
I know its kina lame but this is just too important to have against control decks.
You can cast her without Fires and she provides an uncounterable clock for your opponent.

Jace, Wielder of Mysteries:
Some games just go way too long. If you realise that you are about run out of library, just get the Jace.
Sometimes you can actively play for this alternate wincon by plussing Tamiyo and copying Escape in the Wilds. And sometimes you play against a mill deck and just get them with the Jace out of nowhere.

Nicol Bolas, Dragon-God:
Yeah Bolas is good as a value engine and threat. But in this deck it serves as yet another wincondition.
Sometimes you can just tutor out a Bolas and a Planewide Celebration for an instant win with his ultimate.
Please check if the opponent really dies to his ultimate before you go for it.

Inspired Ultimatum:
Triple it up for value!

Sundering Stroke:
Triple it up for 21 damage to the face!

Thats it! Have fun with the deck and subscribe to the channel for more spicy decks and memes!