Infinite untap of legendary creatures you controlInfinite mana legendary creatures you control can produce
How it works
If Seeker of Skybreak is not your Ring-bearer, use the card that causes the Ring to tempt you to cause Seeker of Skybreak to become your Ring-bearer, thus making it legendary.
Activate Ioreth's second ability by tapping it, untapping Seeker of Skybreak and another legendary creature.
Activate Seeker of Skybreak by tapping it, untapping Ioreth.