Creature Breakdown:

Early game ramp, gets you a turn two Rhythm of the Wild or Gruul Spellbreaker one of the best turn on plays, at worst it eats a Shock which means damage not going to your face

Definitely the most surprising workhorse in this deck for me, a 3/3 or 4/4 isn't uncommon and it at 4 power you start trampling over their weaker creatures

A nice fat Squadron Hawk this synergizes exteremly well with Rhythm of the Wild 2 mana drop a 3/3 and get another in hand, the redundancy seems very underrated as it allows your hand to stay full until it empties onto the board

Goodbye Settle the Wreckage it wasn't nice knowing ya. A mini pseudo Carnage Tyrant the hexproof this provides to you is vital against both control and burn as it cuts down on a lot of their instant speed moves.

A pretty effective answer against fliers, this is an effecient card. A 3/2 for 2 isnt much to scoff at.

An auto include in most red midrange decks, it trades well with all the drakes, has redundancy and and with a clogged board 4 over the top is a good move.

It's not a Stormbreath Dragon but it's not bad at all with a Rhythm of the Wild you can send 5 in the air to the face with haste which is always a beating, or just make it a 6/6 and tell Lyra Dawnbringer to eat her heart out.

She's big, she's hungry, and she gets on board supringly fast in this deck. If you have rhythm you should give it haste 99% of the time, the only time id consider a +1/+1 counter is if there's another ghalta on the other side.

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Non-Creature Breakdown:

Counters permission based control, buffs your creatures or gives them haste, whats not to love?

The main reason this is run over Rabid Bite or Thrash//Threat is the exile clause. Arclight Phoenix? Nah Rekindling Phoenix? Nice try. Everyone knows a phoenix rises from the ashes not the lava.

The +1 is nice ramp and riot is a major upside. The -3 is really good if you hit 2 creatures, decent if you hit 1 and terrible if you hit 0 but overall it's normally card advantadge especially in such a creature heavy deck. The ultimate is decent but not really Domri's high point as a walker, the tokens don't trigger Rhythm of the Wild and getting a 4/4 is okay but grabbing creatures with the -3 and buffing them with the +1 is much more effecient.

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Land Breakdown:

Synergizes well with Rootbound Crag I normally won't take a first turn shock if I can help it and prefer to go Forest into Llanowar Elves or Pelt Collector, especially on the play as you may be up against mono red.

If you can play this turn 2 or higher as every other land in this deck causes this to come in untapped.

Turn sideways, make big creatures.