Ultron, Artificial Malevolence + Voltaic Construct + Gilded Lotus Combo

Gilded Lotus in hand.

Ultron and Voltaic Construct on the battlefield.

available

Cast Gilded Lotus by paying its mana cost.

When Gilded Lotus enters, Ultron triggers.

Holding priority, activate Gilded Lotus by tapping it, adding three mana of any color.

Resolve the Ultron trigger, causing you to pay to create a copy of Gilded Lotus that is a 2/2 Robot Villain creature.

During your next turn, activate the Gilded Lotus token by tapping it, adding three mana of any color

Activate Voltaic Construct by paying , untapping the Gilded Lotus token.

Repeat from step 5.

Infinite colored mana