Vedalken Engineer, Mycosynth Lattice, and Pemmin's Aura

Prerequisites

• Vedalken Engineer on the battlefield
• Mycosynth Lattice on the battlefield
• Pemmin's Aura on the battlefield

Steps

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

Results

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