BUDGET cEDH - Marwyn, the Nurturer (EDH / Commander)

Below is a list of the various infinite mana combos that are possible within this list. Most are listed but there may be more that were missed.

MARWYN OR PRIEST OF TITANIA LOOPS

The bellow combos use the mass mana generation of Marwyn or Priest to make infinite mana:

Wirewood Symbiote + Temur Sabertooth + a random nontoken elf = Infinite Mana
Symbiote + Cloudstone Curio + a random nontoken elf = Infinite Mana
Hyrax Tower Scout + Temur Sabertooth = Infinite Mana
Kogla, the Titan Ape + Hyrax Tower Scout = Infinite Mana
Ashaya / Ranger Combos

Quirion Ranger + Ashaya, Soul of the Wild = Infinite Mana
Scryb Ranger + Ashaya, Soul of the Wild = Infinite Mana
Ranger / Pioneer Combos

Temur Sabertooth + Quirion Ranger + Elvish Pioneer = Infinite Mana
Temur Sabertooth + Scryb Ranger + Elvish Pioneer = Infinite Mana
Artifact loops

Marwyn, the Nurturer + Staff of Domination
Priest of Titania or Karametra’s Acolyte + Staff of Domination
Marwyn, the Nurturer + Umbral Mantle
Priest of Titania or Karametra’s Acolyte + Umbral Mantle

NOW WHAT?

We will mainly be winning with an impossibly large Finale of Devastation or looping Beast Within to create infinite tokens.

Once you have infinite mana, you need to find Eternal Witness and Beast Within.

There are several a few ways of doing this:

Staff of Domination is probably the easiest since it enables infinite mana and can draw you your deck all in one card.
Beast Whisperer works as well with some loops to draw you your deck.
Elvish Visionary or any other ETB draw card can also be looped to draw your deck.

BEAST WITHIN LOOP:

Cast Beast Within on an opponent's permanent.
Cast Eternal Witness returning Beast Within to your hand.
Beast Within an opponent’s permanent.
Use Temur Sabortooth to bounce Eternal Witness to your hand.
Replay Eternal Witness returning Beast Within to your hand.
Continue destroying your opponent's stuff until all they have is a few beast tokens.
Once they don't have anything, you can either loop Beast Within targeting one of your dorks or you can loop Kogla, the Titan Ape to rid your opponents of their beast tokens while making your own.
Cast Finale of Devastation with X being 10 or more to give all your tokens haste and swing for infinite damage.

TOOTH AND NAIL WIN

Entwine Tooth and Nail to fetch Ashaya, Soul of the Wild and Woodland Bellower
Woodland Bellower fetches Quirion Ranger
Perform the Quirion & Ashaya loop to create infinite mana.
Once you have infinite mana, use Quirion Ranger to return Woodland Bellower to your hand
Play Woodland Bellower to fetch Eternal Witness
Eternal Witness gets back Tooth and Nail
Entwine Tooth and Nail again, fetching Temur Sabertooth & Destiny Spinner
Use Temur Sabertooth to bounce and replay Eternal Witness, recurring Tooth and Nail again.
Play Tooth and Nail to get Elvish Visionary or any other etb card draw creature, and any other creature you like
Bounce and replay Elvish Visionary to draw your deck
Finish with either Finale of Devastation or Beast Within loops.

COPPERHORN SCOUT

Copperhorn Scout allows you to use your massive non infinite mana production and untap to do it again in your second main phase. You can also use Ezuri to pump your creatures, untap them all with the Copperhorn trigger and pump them again with Ezuri before damage is dealt.

(This deck is based off of these two decks: https://www.moxfield.com/decks/7Og0NOMESUaFwAshV9wC1Q/ and https://www.moxfield.com/decks/PQPz_KSrV0S5_Huk1zh_tg)