Demilich (AFR) / Extended Art Foil

This spell costs {U} less to cast for each instant and sorcery you've cast this turn.
Whenever Demilich attacks, exile up to one target instant or sorcery card from your graveyard. Copy it. You may cast the copy.
You may cast Demilich from your graveyard by exiling four instants and/or sorcery cards from your graveyard in addition to paying its other costs.