Ruthless Technomancer enters the battlefield, causing you to sacrifice Felidar Guardian and create four Treasure tokens.
Activate three Treasure tokens by tapping and sacrificing them, adding ({2} magic symbol) ({B} magic symbol) .
Activate Ruthless Technomancer by paying ({2} magic symbol) ({B} magic symbol) and sacrificing a Treasure token, returning Felidar Guardian from your graveyard to the battlefield.
Felidar Guardian enters the battlefield, blinking Ruthless Technomancer.