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

Idris, Soul of the TARDIS

Lithoform Engine

Basalt Monolith

Sphinx's Disciple

Biotransference

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 clever loop centers on Idris, Soul of the TARDIS utilizing its imprint ability—doubled via Lithoform Engine's first ability—to swallow both Basalt Monolith and Sphinx's Disciple at the same time, granting Idris the activated mana-and-untap engine of the Monolith alongside the inspired card-drawing trigger of the Disciple. Meanwhile, Biotransference quietly ensures your battlefield stays fully integrated as artifacts, though the true heavy lifting here relies on Idris mimicking the Monolith to tap for three mana and pay three to untap infinitely. Each of those untap cycles forces the copied Sphinx's Disciple trigger to resolve, flooding your hand with an infinite stream of cards.