Cast Sensei's Divining Top either from your hand or from the top of your library by paying 1.
Displacer Kitten and The Fourth Doctor trigger
Resolve the Displacer Kitten trigger, blinking The Fourth Doctor.
Resolve the Fourth Doctor trigger, creating a Food token.
Activate Sensei's Divining Top's second ability by tapping it, causing you to draw a card and put Sensei's Divining Top onto the top of your library.
Activate Krark-Clan Ironworks by sacrificing the Food, adding CC.
Repeat.
This intricate loop transforms a simple spinning top into a relentless engine of creation and card draw, fueled by the recursive topdeck casting granted by The Fourth Doctor. Each time you cast Sensei's Divining Top, Displacer Kitten blinks The Doctor to trigger a Food token, while Krark-Clan Ironworks happily turns those generated Foods into the colorless mana needed to recast the Top. Sensei's Divining Top then seamlessly cycles back to the top of your library to repeat the process, letting you draw your deck and churn out endless artifact triggers.