Idris, Soul of the TARDIS + Lithoform Engine + Basalt Monolith + Sphinx's Disciple + Mycosynth Lattice

Idris, Soul of the TARDIS

Lithoform Engine

Basalt Monolith

Sphinx's Disciple

Mycosynth Lattice

How it works

1. Cast Idris either from your hand or from the command zone by paying 1 and commander tax, if applicable.
2. When Idris enters the battlefield, its imprint ability triggers, targeting Sphinx's Disciple.
3. Holding priority, activate Lithoform Engine's first ability by paying 2 and tapping it, copying Idris' trigger, targeting Basalt Monolith.
4. Resolve both Idris triggers, exiling Basalt Monolith and Sphinx's Disciple.
5. During your next turn, activate Idris using Basalt Monolith's first ability by tapping it, adding CCC.
6. Activate Idris using Basalt Monolith's second ability by paying 3, untapping it.
7. Sphinx's Disciple triggers, causing you to draw a card.
8. Repeat from step 5.

This loop centers on Idris, Soul of the TARDIS, which gains the activated and triggered abilities of everything it has successfully imprinted. Thanks to Mycosynth Lattice turning every permanent into an artifact, Idris can imprint non-artifact creatures like Sphinx's Disciple alongside traditional artifacts. By using Lithoform Engine to copy the entry trigger, Idris steals the activated mana abilities of Basalt Monolith and the inspired untap trigger of Sphinx's Disciple all at once. Once established, you can repeatedly tap and untap the imprinted Basalt Monolith ability for infinite mana while triggering Sphinx's Disciple's card draw infinitely upon each untap.