At the beginning of your precombat main phase, There and Back Again triggers, putting a lore counter on it and triggering its third chapter ability, creating a 6/6 Smaug legendary creature token and sacrifice There and Back Again.
Activate Rydia by paying {5} and tapping it, returning There and Back Again from your graveyard to the battlefield with a finality counter on it. As There and Back Again enters the battlefield, choose to have it enter with three lore counters due to its read-ahead ability.
There and Back Again's third chapter ability triggers. Holding priority, activate Hex Parasite by paying {1}{B/P}, removing the finality counter from There and Back Again.
Resolve the There and Back Again trigger, creating a 6/6 Smaug legendary creature token and sacrifice There and Back Again.
Put a Smaug token into your graveyard due to the legend rule, triggering its ability, creating fourteen Treasure tokens.
Activate eight Treasures by tapping and sacrificing them, adding {6}{U}{B}.
Activate Freed from the Real by paying {U}, untapping Rydia.
Repeat from step 2.

Infinite LTB

Infinite ETB

Infinite colored mana

Infinite death triggers

Infinite Treasure tokens

Rydia, Summoner of Mist

There and Back Again

Barbara Wright

Hex Parasite

Freed from the Real

Play Simic Growth Chamber.
When Simic Growth Chamber enters the battlefield, it, Kodama and Rydia trigger.
Resolve the Kodama trigger, choosing to put nothing onto the battlefield.
Resolve the Simic Growth Chamber trigger, returning it from the battlefield to your hand.
Resolve the Rydia trigger, causing you to rummage.
The Locust God triggers, creating a 1/1 Insect creature token with flying and haste.
When the Insect enters the battlefield, Kodama triggers, putting Simic Growth Chamber from your hand onto the battlefield.
When Simic Growth Chamber enters the battlefield, it and Rydia trigger.
Repeat from step 4.

Combos with "Rydia, Summoner of Mist"