Black Mana Glimmer Box

{p/b}, Discard Black Mana Glimmer Box from your
hand: Add {b}{b}. Exile it from your graveyard.
If Black Mana Glimmer Box is in exile, you may
sacrifice two permanents and discard two cards
to cast it. As you do, it's an artifact spell on the
stack instead of a sorcery spell. When it enters
the battlefield, it enters as an artifact in addition
to its other types and gains shadow, dethrone,
exalted, devoid and defender and "Glimmers you
control have ingest."