Archivist

Whenever a you cast an instant or sorcery spell, a creature you control connives 2.
Whenever an opponent casts an instant or
sorcery spell, create Book Wurm, a legendary 1/1
blue wurm creature token with "This creature
gets +X/+X where X is the number of instants
and sorceries in your graveyard." and "When this creature dies, you may cast an instant or sorcery
from your graveyard this turn as though
it had flash."