Ioreth of the Healing House, and Forensic Researcher

Prerequisites

• Ioreth of the Healing House on the battlefield
• Forensic Researcher on the battlefield
• Ioreth and Forensic Researcher do not have summoning sickness
• There is another legendary creature on the battlefield

Steps

1. If Forensic Researcher is not your Ring-bearer, use the card that causes the Ring to tempt you to cause Forensic Researcher to become your Ring-bearer, thus making it legendary
2. Activate Ioreth's second ability by tapping it, untapping Forensic Researcher and another legendary creature
3. Activate Forensic Researcher by tapping it, untapping Ioreth
4. Repeat from step 2

Results

• Infinite untap of legendary creatures you control
• Infinite mana legendary creatures you control can produce