Ceyrith, the Hallowhall

When Ceyrith, the Hallowhall enters play, you
may put an Aura card you own in exile with a light
counter on it into your graveyard. If you don't,
Ceyrith enters play tapped.

{t}: Add {w} or {u}.

{1}, {t}: Exile an Aura card from your hand or
graveyard and put a light counter on it. If you
do, draw a card. Activate only as a sorcery.