Glaring Fleshraker's first ability triggers, creating a 0/1 Eldrazi Spawn creature token.
When the Eldrazi Spawn enters, Glaring Fleshraker's second ability triggers, dealing 1 damage to each opponent.
When Sensei's Divining Top enters, Rook Turret triggers.
Holding priority, activate Sensei's Divining Top by tapping it, causing you to draw a card and put Sensei's Divining Top on top of your library.
Resolve the Rook Turret trigger, causing you to draw Sensei's Divining Top from your library, and then discard a card other than Sensei's Divining Top.
Activate the Eldrazi Spawn by sacrificing it, adding C.
Repeat
This loop turns the modest investment of recasting Sensei's Divining Top into a lethal engine by leveraging passive triggers from your other permanents. As you repeatedly cast the artifact, Glaring Fleshraker acts as your win condition, converting each colorless casting into an Eldrazi Spawn token and its entry trigger into a direct damage blast to each opponent. Meanwhile, Rook Turret sits on your board to quietly filter your hand via looting whenever Sensei's Divining Top enters, allowing you to cycle the top back to your hand mid-stack while generating the colorless mana needed from the Eldrazi Spawn sacrifice to pay for the next cast.