Ioreth of the Healing House, and Clever Conjurer

Prerequisites

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

Steps

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