Activate Vedalken Engineer by tapping it, adding two mana of any color.
Activate Freed from the Real's second ability by paying {1}, untapping Vedalken Engineer.
Repeat.

Infinite colored mana that can only be spent to activate abilities

Infinite colored mana that can only be spent to cast artifact spells

Vedalken Engineer

Mycosynth Lattice

Freed from the Real

Activate Vedalken Engineer by tapping it, adding {U}{U}.
Activate Freed from the Real's second ability by paying {U}, untapping Vedalken Engineer.
Repeat.

Infinite colored mana that can only be spent to cast permanent spells

Encroaching Mycosynth

Activate Vedalken Engineer by tapping it, adding two mana of any color.
Activate Pemmin's Aura's first ability by paying {1}, untapping Vedalken Engineer.
Repeat.

Pemmin's Aura

Activate Vedalken Engineer by tapping it, adding {U}{U}.
Activate Pemmin's Aura's first ability by paying {U}, untapping Vedalken Engineer.
Repeat.

Activate Karn's first loyalty ability by putting a loyalty counter on it, causing Halo Fountain to become an artifact creature until end of turn.
Activate Vedalken Engineer by tapping it, adding {W}{W} that can only be spent to cast artifact spells or activate abilities of artifacts.
Activate Halo Fountain's second ability by paying {W}{W}, tapping it and untapping Halo Fountain and Vedalken Engineer, causing you to draw a card.
Repeat from step 2.

Infinite card draw

Infinite draw triggers

Halo Fountain

Karn, the Great Creator

Activate Vedalken Engineer by tapping it, adding {W}{W} that can only be spent to cast artifact spells or activate abilities of artifacts.
Activate Halo Fountain's second ability by paying {W}{W}, tapping it and untapping Halo Fountain and Vedalken Engineer, causing you to draw a card.
Repeat.

Ensoul Artifact

Activate Karn by paying {1}, causing Halo Fountain to become an artifact creature until end of turn.
Activate Vedalken Engineer by tapping it, adding {W}{W} that can only be spent to cast artifact spells or activate abilities of artifacts.
Activate Halo Fountain's second ability by paying {W}{W}, tapping it and untapping Halo Fountain and Vedalken Engineer, causing you to draw a card.
Repeat from step 2.

Karn, Silver Golem

Activate Thermal Navigator by sacrificing Corridor Monitor, giving Thermal Navigator flying until end of turn.
Activate Vedalken Engineer by tapping it, adding {U}{U} that can only be spent to cast artifact spells or activate abilities of artifacts.
Activate Emry by tapping it, letting you cast Corridor Monitor from your graveyard this turn.
Cast Corridor Monitor from your graveyard by paying {1}{U}.
Mirran Spy triggers, untapping Emry.
Corridor Monitor enters the battlefield, untapping Vedalken Engineer.
Repeat.

Combos with "Vedalken Engineer"