At first glance, this card may look odd next to
some of black's other tutor cards. Why does it
go to the top of your library? Isn't it better
to have it in your hand where you can use it?
But that's close enough when it's instant speed,
and it also serves as the other side of that
versatility. In a sense that's remarkably fair,
even if it's still too powerful for Standard;
indeed, in the history of this card, we see that
it's done things like hold together shockingly
powerful non-combo decks like the original Rock
by giving them access to silver bullets and
situational answers as needed.
Fun fact: This card is directly alluded to by
the original Liliana Vess card from Lorwyn. Her
second ability has the exact same game text, and
costs -2 loyalty.