Ultron, Artificial Malevolence, Voltaic Construct, and Sceptre of Eternal Glory

Prerequisites

• Ultron, Artificial Malevolence on the battlefield
• Voltaic Construct on the battlefield
• Sceptre of Eternal Glory in hand
• available

Steps

1. Cast Sceptre of Eternal Glory by paying its mana cost
2. When Sceptre of Eternal Glory enters, Ultron triggers Holding priority, activate Sceptre of Eternal Glory by tapping it, adding three mana of any color
3. Resolve the Ultron trigger, causing you to pay to create a copy of Sceptre of Eternal Glory that is a 2/2 Robot Villain creature
4. Put the nontoken Sceptre of Eternal Glory into your graveyard due to the legend rule
5. During your next turn, activate the Sceptre of Eternal Glory token by tapping it, adding three mana of any color Activate Voltaic Construct by paying , untapping the Sceptre of Eternal Glory token
6. Repeat from step 6

Results

• Infinite colored mana