The Fourth Doctor + Displacer Kitten + Sensei's Divining Top + Gran-Gran

The Fourth Doctor

Displacer Kitten

Sensei's Divining Top

Gran-Gran

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 clever loop turns the unassuming Sensei's Divining Top into an infinite card-drawing and artifact-blinking engine by constantly cycling it from the top of your library to the battlefield. The Fourth Doctor acts as a crucial enabler, letting you play the Top right back off the top of your library and rewarding each cast with a steady stream of Food tokens. Meanwhile, Displacer Kitten provides the kinetic energy, resetting your board state and blinking The Fourth Doctor every time a noncreature spell is cast. While Gran-Gran's tap ability isn't strictly required to keep the loop going, her static cost reduction helps grease the wheels if you need to offset casting expenses, rounding out a deeply synergistic chain.