Gezmoxa, God of Jewels

Indestructible
As long as your devotion to blue, black, red and
green is less than fifteen, Gezmoxa isn't a
creature.
Lands you control have {x}{u}{b}{r}{g},{t}, Sacrifice
this land: Create X colorless Gem artifact tokens
with {t},Sacrifice this card: add one mana of any
color.