Activate Basalt Monolith's first ability by tapping it, adding {C}{C}{C}
Activate Basalt Monolith's second ability by paying {3}
Locus of Enlightenment triggers, untapping Basalt Monolith
Holding priority, activate Basalt Monolith by tapping it, adding {C}{C}{C}
Resolve Basalt Monolith's ability from step 2, untapping it.
Repeat

Infinite colorless mana

The Enigma Jewel // Locus of Enlightenment

Basalt Monolith

Activate Aphetto Alchemist by tapping it, targeting itself.
Locus of Enlightenment triggers, copying Aphetto Alchemist's ability targeting any other creature or artifact.
Resolve both Aphetto Alchemist abilities, untapping it and the other targeted creature or artifact.
Repeat.

Infinite untap of artifacts you control

Infinite untap of creatures you control

Infinite mana creatures you control can produce

Infinite mana artifacts you control can produce

Aphetto Alchemist

Activate Sol Ring by tapping it, adding {C}{C}.
Activate Voltaic Key by paying {1} and tapping it, targeting Sol Ring.
Locus of Enlightenment triggers, copying Voltaic Key's ability, targeting Voltaic Key.
Resolve both Voltaic Key abilities, untapping it and Sol Ring.
Repeat.

Voltaic Key

Sol Ring

Activate Grim Monolith's first ability by tapping it, adding {C}{C}{C}
Activate Grim Monolith's second ability by paying {4}
Locus of Enlightenment triggers, untapping Grim Monolith
Holding priority, activate Grim Monolith by tapping it, adding {C}{C}{C}
Resolve Grim Monolith's ability from step 2, untapping it.
Repeat

Grim Monolith

Activate Locus of Enlightenment using the Spacecraft's station ability by tapping a creature with power 1 or greater.
Locus of Enlightenment triggers, copying its ability from step 1.
Resolve both Locus of Enlightenment abilities, putting a number of charge counters on it equal to twice the tapped creature's power.
If needed, repeat from step 1 until Locus of Enlightenment has three or more charge counters on it.
Activate Locus of Enlightenment using Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, causing you to take an extra turn after this one.
Repeat each turn.

Infinite turns

Spacecraft

Magistrate's Scepter

Activate Locus of Enlightenment using Magistrate's Scepter's first ability by paying {4} and tapping it.
Locus of Enlightenment triggers, copying its activated ability.
Resolve both Locus of Enlightenment abilities from steps 7 and 8, putting two charge counters on it.
Activate Locus of Enlightenment using Staff of Domination's first ability by paying {1}.
Locus of Enlightenment triggers, copying its activated ability.
Resolve both Locus of Enlightenment abilities, untapping it.
Activate Locus of Enlightenment's second ability by tapping it and removing three charge counters from it.
Locus of Enlightenment triggers, copying its activated ability.
Resolve both Locus of Enlightenment abilities, causing you to get two extra turns after this one.
Move to your first extra turn.
Repeat steps 1 through 3 one additional time.
Move to your second extra turn.
Repeat from step 1.

Staff of Domination

Activate The Core by tapping it, adding at least two mana of any color.
Activate Deserted Temple's second ability by paying {1} and tapping it, targeting itself.
Locus of Enlightenment triggers, copying Deserted Temple's ability, targeting The Core.
Resolve both Deserted Temple abilities, untapping it and The Core.
Repeat.

Infinite untap of lands you control

Infinite mana lands you control can produce

Infinite colored mana

Deserted Temple

Matzalantli, the Great Door // The Core

Activate Seeker of Skybreak by tapping it, targeting itself.
Locus of Enlightenment triggers, copying Seeker of Skybreak's ability targeting any other creature.
Resolve both Seeker of Skybreak abilities, untapping it and the other targeted creature.
Repeat.

Seeker of Skybreak

Activate The Enigma Jewel's first ability by tapping it, if able, adding {C}{C} that can only be spent to activate abilities.
Activate The Enigma Jewel's second ability by paying {8}{U}, exiling it, exiling Magistrate's Scepter and Ventifact Bottle either from the battlefield or from your graveyard, and exiling two other nonland cards with activated abilities either from the battlefield or from your graveyard, returning The Enigma Jewel to the battlefield transformed.
Activate Locus of Enlightenment using Ventifact Bottle's ability by paying {3} and tapping it.
Locus of Enlightment triggers, copying its ability.
Resolve both Locus of Enlightenment abilities, putting four charge counters on it.
During your next turn, activate Locus of Enlightment using Magistrate Scepter's second ability by tapping it and removing three charge counters from it.
Locus of Enlightment triggers, copying its ability.
Resolve both Locus of Enlightenment abilities, causing you to take two extra turns after this one.
Move to your next turn.
Repeat from step 3.

Ventifact Bottle

Activate Urza by paying {6}, targeting Radiant Lotus.
Locus of Enlightenment triggers, copying Urza's ability, targeting Radiant Lotus.
Resolve both Urza abilities, creating two token copies of Radiant Lotus that are 1/1 Soldier artifact creatures.
Activate a Radiant Lotus token by tapping it and sacrificing both Radiant Lotus tokens, targeting yourself.
Locus of Enlightenment triggers, copying the Radiant Lotus token's ability, targeting yourself.
Resolve both Radiant Lotus abilities, adding twelve mana of any color.
Repeat.

Combos with "The Enigma Jewel // Locus of Enlightenment"