Ioreth of the Healing House + Arixmethes, Slumbering Isle + Minamo, School at Water's Edge + Roaring Earth
Ioreth of the Healing House
Arixmethes, Slumbering Isle
Minamo, School at Water's Edge
Roaring Earth
Infinite green mana
How it works
Activate Roaring Earth by paying 1 and discarding it, causing Minamo to become a 0/0 Spirit creature with haste that's still a land, and putting a +1/+1 counter 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.