This clever loop achieves infinite white mana by turning your creature lineup into a bustling engine of synergy. Ashaya, Soul of the Wild does the heavy lifting by making all your nontoken creatures into Forest lands in addition to their other types, transforming Farrelite Priest and any other allies into literal land permanents. Blossoming Tortoise then steps in to spot the discount, using its static ability to reduce the cost of all activated abilities of lands you control by {1}. Because Farrelite Priest is now recognized as a land by the game rules, its mana ability costs zero to activate, letting you tap and untap it freely to generate an endless supply of white mana.