Steelswarm Operator, Filigree Sages, and Zirda, the Dawnwaker

Prerequisites

• Steelswarm Operator on the battlefield
• Filigree Sages on the battlefield
• Zirda, the Dawnwaker on the battlefield

Steps

1. Activate Steelswarm Operator's second ability by tapping it, adding that can only be spent to activate abilities of artifacts
2. Activate Filigree Sages by paying , untapping Steelswarm Operator
3. Repeat

Results

• Infinite mana artifacts you control can produce
• Infinite untap of artifacts you control
• Infinite blue mana that can only be spent to activate abilities of artifacts
• Infinite blue mana that can only be spent to cast artifact spells