The following three card combo generates infinite mana (any
color!):
Sachi, Daughter of Seshiro
Orochi Leafcaller
Freed from the Real
Enchant either Sachi or the Leafcaller with FftR. Thanks to
Sachi, shamans
(shamen?) tap for GG. Tap the enchanted creature for GG,
filter one G thru the Leafcaller for U and use it to untap
via Freed from the Real. Rinse and repeat, accumulating one
G each cycle. If you need another color, just send as many
G's thru the Leafcaller as needed!
Shazam!
