Glimpse the Cosmos

Look at the top three cards of your library.
Put one of them into your hand and the rest
on the bottom of your library in any order.

As long as you control a Giant, you may cast
Glimpse the Cosmos from your graveyard by
paying {u} rather than paying its mana cost. If
you cast Glimpse the Cosmos this way and
it would be put into your graveyard, exile it
instead.