Dargo, the Shipwrecker + Silas Renn, Seeker Adept + Ruthless Technomancer + Cemetery Puca

Exhibition

How it works

Silas Renn are your commanders.
You have sacrificed a number of artifacts and/or creatures this turn equal to the number of times you've cast Dargo from the command zone this game minus seven.

Cast Ruthless Technomancer by paying .
When Ruthless Technomancer enters the battlefield, it triggers, causing you to sacrifice Dargo and create seven Treasure artifact tokens.
Choose to return Dargo to the command zone from your graveyard.
When Dargo dies, Cemetery Puca triggers, choose not to pay.
Activate five Treasures by tapping and sacrificing them, adding .
Cast Dargo by paying and sacrificing Ruthless Technomancer.
When Ruthless Technomancer dies, Cemetery Puca triggers, causing you to pay to have it become a copy of Ruthless Technomancer.
Activate Cemetery Puca by paying and sacrificing two Treasures, returning Ruthless Technomancer from your graveyard to the battlefield.
Repeat steps 2 through 4 one additional time.
Activate four Treasures by tapping and sacrificing them, adding .
Cast Dargo by paying and sacrificing Ruthless Technomancer.
When Ruthless Technomancer dies, Cemetery Puca triggers, choose not to pay.
Repeat from step 8.

In which brackets is this combo allowed, per Spellbook's Exhibition tier?

1–2 · Exhibition & Core

Allowed in this bracket.

3 · Upgraded

Allowed in this bracket.

4–5 · Optimized & cEDH

All combos are allowed.