Ioreth of the Healing House + Kelpie Guide + Card with "The Ring tempts you"

Prerequisites

• Ioreth and Kelpie Guide do not have summoning sickness.
• There is another legendary creature on the battlefield.
• Card with "The Ring tempts you"

Steps

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

Effects

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