Blue Sun's Zenith
Mirrodin Besieged — rare
Instant
Blue Sun's Zenith rulings:
2018-03-16: Because you follow the spell's instructions in order, you won't be able to draw the same Blue Sun's Zenith that you cast.
2011-06-01: If this spell doesn't resolve, none of its effects occur. In particular, it will go to the graveyard rather than to its owner's library.