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

Idris, Soul of the TARDIS

Lithoform Engine

Basalt Monolith

Sphinx's Disciple

Memnarch

How it works

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

This intricate setup transforms Idris, Soul of the TARDIS into a self-sustaining engine by feeding it a curated set of stolen abilities. Memnarch is the mastermind here, turning Sphinx's Disciple into an artifact so that Idris can imprint it alongside Basalt Monolith—a feat made possible by using Lithoform Engine to double the entering trigger. Once exiled, Idris gains the mana-producing and untapping abilities of Basalt Monolith alongside the inspired card-drawing trigger of Sphinx's Disciple, letting you loop the mana generation and untap steps endlessly to draw your entire deck.