Faarha, Watcher in the Wood

Whenever an opponent cast their first spell
each turn, create a 1/1 dryad creature token
with -
"{g}{t}: This creature becomes an aura
enchantment with enchant creature. Attach
it to target creature. Enchanted creature gets
+1/+1. You may pay {g} to end this effect."
Faarha's power and toughness are each equal
to the number of enchantments you control.