Invigorating Essence

Enchant land
Whenever enchanted land is tapped for mana,
its controller adds an additional {g}. If this
mana is spent to cast a creature spell, put a
+1/+1 counter on enchanted land.
Sacrifice Invigorating Essence: Enchant land
becomes a 0/0 green Elemental creature.
"As the druid strode past, the world felt her step."