Druid's Temple

Whenever you tap a nonland permanent for mana, you may gain 2 life. If you don't, lose 1 life and create a 0/1 green and white Druid creature token with "{t}, sacrifice this creature:
Add {g} or {w} to your mana pool."
Lands you control have indestructible.
"Not many acknowledge the most potent mage of all: the land itself."
-Dejara, Giltwood druid