The Fourth Doctor + Displacer Kitten + Sensei's Divining Top + Semblance Anvil

The Fourth Doctor

Displacer Kitten

Sensei's Divining Top

Semblance Anvil

How it works

1. Cast Sensei's Divining Top either from your hand or from the top of your library by paying 0.
2. Displacer Kitten triggers, and The Fourth Doctor triggers if you had cast Sensei's Divining Top from your library.
3. Resolve the Displacer Kitten trigger, blinking The Fourth Doctor.
4. Resolve the Fourth Doctor trigger, if applicable, creating a Food token.
5. 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.
6. Repeat.

This intricate setup transforms a humble artifact into an endless engine by leveraging cost reduction and continuous blinking. With Semblance Anvil exiling an artifact from your hand, Sensei's Divining Top becomes free to cast, and because it counts as a historic spell, The Fourth Doctor allows you to play it right off the top of your library while generating a stream of Food tokens. Every time you cast that artifact, Displacer Kitten triggers to blink The Fourth Doctor, resetting the battlefield while you simply tap Sensei's Divining Top to draw a card and place it back on top of your library to repeat the cycle infinitely.