Ioreth of the Healing House + Arixmethes, Slumbering Isle + Minamo, School at Water's Edge + Nissa, Who Shakes the World
Ioreth of the Healing House
Arixmethes, Slumbering Isle
Minamo, School at Water's Edge
Nissa, Who Shakes the World
Infinite green mana
How it works
Activate Nissa's first loyalty ability by putting a loyalty counter on it, causing Minamo to become a 0/0 Elemental creature with haste that's still a land, and putting three +1/+1 counters on it.
Activate Arixmethes by tapping it, adding .
Activate Minamo's second ability by paying and tapping it, untapping Ioreth of the Healing House.
Activate Ioreth of the Healing House's second ability by tapping it, untapping Minamo and Arixmethes.
Repeat from step 2.
This clever loop turns the legendary land Minamo, School at Water's Edge into an engine of continuous mana generation by exploiting its ability to untap legendary permanents. Because Nissa, Who Shakes the World permanently transforms Minamo into a creature while it acts as a land, Minamo itself qualifies as a legendary creature alongside Arixmethes, Slumbering Isle—allowing Ioreth of the Healing House to untap both of them simultaneously with a single tap. Once Arixmethes provides the initial green and blue mana, Minamo and Ioreth alternate untapping one another while profiting from Arixmethes's massive two-mana tap capability, leaving you with an infinite supply of green mana.