Lizbeth, Seeker of Treasures

Lizbeth, Seeker of Treasures cannot be blocked
by creatures with flying.
Whenever Lizbeth, Seeker of Treasures attacks,
you may discard a card. If you do, the defending
player exiles a card at random from their hand.
You may look at and cast that card for as long as
it remains exiled, and you may spend mana as
though it were mana of any type to cast that
spell.