Sydri, Galvanic Genius, Voltaic Construct, and Empowered Autogenerator

Prerequisites

• Sydri, Galvanic Genius on the battlefield
• Voltaic Construct on the battlefield
• Empowered Autogenerator on the battlefield
• Empowered Autogenerator does not have summoning sickness
• Empowered Autogenerator has at least two charge counters on it
• available

Steps

1. Activate Sydri by paying , causing Empowered Autogenerator to become an artifact creature until end of turn
2. Activate Empowered Autogenerator by putting a charge counter and tapping it, adding mana of any color equal to charge counters on Empowered Autogenerator
3. Activate Voltaic Construct by paying , untapping Empowered Autogenerator
4. Repeat from step 2

Results

• Infinite colored mana