Avalon, Isle of Fey

Shroud.
When Avalon, isle of Fey enters the battlefield,
choose a creaturecard, and an instant or sorcery
card from your graveyard and exile them under Avalon, Isle of Fey.
{t}: {u} or {b}
{2}{u}{b}{t}: Cast a spell exiled under Avalon, Isle
of Fey.