Ioreth of the Healing House, and Vizier of Tumbling Sands

Prerequisites

• Ioreth of the Healing House on the battlefield
• Vizier of Tumbling Sands on the battlefield
• Ioreth and Vizier of Tumbling Sands do not have summoning sickness
• There is another legendary creature on the battlefield

Steps

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