Aethereal Portal

When Aethereal Portal enters the battlefield,
search your library for up to four colorless cards,
then exile those cards with an Aether counter on
them. Then shuffle your library.
{3}, Exile a card from your hand: Put a card you
own with an Aether counter on it from exile into
your hand.
"Throw the shadow man into the spooky portal and
break it behind him. Doesn't seem too difficult."
- Deena, Silent Warrior