Constellation Nest

At the beginning of your upkeep you may
sacrifice any number of creatures. if you do
search your library for any number of
legendary permanents with total
converted mana costs equal to or less than
the combined power of the sacrificed creatures.
• Exile a noncreature nonland permanent from
your graveyard: search your library for a
legendary permanent with total converted mana
costs equal to or less than the
Exiled cards converted mana cost