Idris, Soul of the TARDIS + Strionic Resonator + Basalt Monolith + Sphinx's Disciple + Liquimetal Torque

Idris, Soul of the TARDIS

Strionic Resonator

Basalt Monolith

Sphinx's Disciple

Liquimetal Torque

How it works

1. Activate Liquimetal Torque's second ability by tapping it, causing Sphinx's Disciple to become an artifact until end of turn.
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 Strionic Resonator 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 ingenious assembly begins by using Liquimetal Torque to temporarily turn Sphinx's Disciple into an artifact, perfectly setting up Idris, Soul of the TARDIS to imprint both the creature and Basalt Monolith into a single, terrifying vessel. Because Idris gains all the activated and triggered abilities of its exiled cards, it inherits Basalt Monolith's mana-generating and self-untapping capabilities alongside Sphinx's Disciple's inspired trigger, which rewards every untap with card draw. To pull off this double-imprint feat, Strionic Resonator steps in to copy the entry trigger so no piece is left behind. Once assembled, you can infinitely untap the chimeric TARDIS for card draw and colorless mana without ever needing to untap during your actual untap step.