Urakisa's Watcher

When Urakisa's Watcher blocks, target attacking
player reveals their hand. You may choose a
nonland card from it. That player discards that
card then draws a card.
When Urakisa's Watcher dies, search your library
for a noncreature card, exile it and shuffle your library. For as long as Urakisa's Watcher remains
in your graveyard, you may cast that card.
"This is my one true sacrifice."