The Shrieking Eels

Legendary spells you cast cost {1} less to cast.
Exile two legendary cards from your
graveyard: Until end of turn, each legendary
card in your graveyard gains "You may play
this card from your graveyard."
Do you know what that sound is, Highness?
Those are the shrieking eels! If you don't believe
me, just wait. They always grow louder when
they're about to feed on human flesh!