Activate Prototype Portal by paying {2} and tapping it, creating a token copy of Thieves' Tools.
When the Thieves' Tools token enters the battlefield, it triggers, creating a Treasure, a Clue and a Food artifact token.
Activate Clock of Omens by tapping the Food and Clue, untapping Prototype Portal.
Activate the Thieves' Tools token and the Treasure token by tapping them, adding {G}{G}.
Repeat.

Infinite tapped Clue tokens

Infinite tapped Food tokens

Infinite copies of a specific artifact

Infinite tapped Treasure tokens

Jaheira, Friend of the Forest

Academy Manufactor

Clock of Omens

Prototype Portal

Thieves' Tools

Activate Prototype Portal by paying {2} and tapping it, creating a token copy of Thieves' Tools and a Food artifact token.
When the Thieves' Tools token enters the battlefield, it triggers, creating a Treasure and a Food artifact token.
Activate Clock of Omens by tapping the two Foods, untapping Prototype Portal.
Activate the Thieves' Tools token and the Treasure token by tapping them, adding {G}{G}.
Repeat.

Infinite card draw

Infinite draw triggers

Peregrin Took

Combos with "Thieves' Tools"