Drow Grovetender

When Drow Grovetender enters the battlefield,
you may exile an Aura card from your graveyard
or hand.
Commune - Whenever you cast an Enchantment
spell, you may return an Aura from exile to the
battlefield enchanting Drow Grovetender. Exile
it at end of turn, or if it or Drow Grovetender
would leave the battlefield.