Ioreth of the Healing House and Clever Conjurer on the battlefield.
Clever Conjurer and Ioreth of the Healing House do not have summoning sickness.
There is another legendary creature on the battlefield.
({U} magic symbol) available.
Steps
Cast Birthday Escape by paying ({U} magic symbol) , causing you to draw a card and the Ring to tempt you, with Clever Conjurer becoming your Ring-bearer, thus making it legendary.
Activate Clever Conjurer by tapping it, untapping Ioreth of the Healing House.
Activate Ioreth of the Healing House's second ability by tapping it, untapping Clever Conjurer and any other legendary creature.
Repeat from step 2.
Results
Infinite mana legendary creatures you control can produce.
Infinite untap of legendary creatures you control.