Dargo and Ruthless Technomancer on the battlefield.
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 nine.
({2} magic symbol) ({B} magic symbol) available.
Steps
Cast Saw in Half by paying ({2} magic symbol) ({B} magic symbol) , destroying Ruthless Technomancer and creating two token copies of it with base power equal to half the destroyed creature's power and base toughness equal to half the destroyed creature's toughness, rounding up each time.
When the Ruthless Technomancer tokens enter the battlefield, their abilities trigger, causing you to sacrifice Dargo and the nontoken Ruthless Technomancer and create nine Treasure tokens.
Choose to return Dargo to the command zone from your graveyard.
Activate four Treasure tokens by tapping and sacrificing them, adding ({2} magic symbol) ({B} magic symbol) ({R} magic symbol) .
If Dargo costs more than ({2} magic symbol) ({R} magic symbol) to cast, activate a Treasure by tapping and sacrificing it, adding ({BR} magic symbol) .
Repeat step 5 as necessary.
Cast Dargo from the command zone by paying ({R} magic symbol) and sacrificing Ruthless Technomancer.
Activate a Ruthless Technomancer token by paying ({2} magic symbol) ({B} magic symbol) and sacrificing two Treasures, returning the nontoken Ruthless Technomancer to the battlefield from your graveyard.
When the nontoken Ruthless Technomancer enters the battlefield, it triggers, causing you to sacrifice Dargo and create seven Treasure tokens.