Activate Architect of the Untamed by paying eight {E}, creating four 6/6 Beast artifact creature tokens.
When the Beasts enter the battlefield, Gonti's Aether Heart triggers four times, causing you to get eight {E}.
Repeat.

Infinite creature ETB

Infinite creature tokens

Architect of the Untamed

Gonti's Aether Heart

Adrix and Nev, Twincasters

Parallel Lives

Activate Architect of the Untamed by paying eight {E}, creating two 6/6 Beast artifact creature tokens.
When the Beast enters the battlefield, Gonti's Aether Heart triggers twice, causing you to get eight {E}.
Repeat.

Vorinclex, Monstrous Raider

Doubling Season

Cast Rite of Replication with kicker by paying {7}{U}{U}, creating ten token copies of Aetherstorm Roc.
When the Aetherstorm Roc tokens enter the battlefield, each Aetherstorm Roc you control triggers ten times, causing you to get 110 {E}.
Activate Architect of the Untamed by paying eight {E}, creating a 6/6 Beast artifact creature token.
When the Beast enters the battlefield, each Aetherstorm Roc you control triggers, causing you to get eleven {E}.
Repeat from step 3.

Infinite energy counters

Aetherstorm Roc

Rite of Replication

Exalted Sunborn

Cast Rite of Replication with kicker by paying {7}{U}{U}, creating five token copies of Aetherstorm Roc.
When the Aetherstorm Roc tokens enter the battlefield, each Aetherstorm Roc you control triggers five times, causing you to get 60 {E}.
Activate Architect of the Untamed by paying eight {E}, creating a 6/6 Beast artifact creature token.
When the Beast enters the battlefield, each Aetherstorm Roc you control triggers, causing you to get twelve {E}.
Repeat from step 3.

Combos with "Architect of the Untamed"