Roszlyn, Bewitched Archivist

Partner with Syna, the Studious Succubus

Whenever you cast a Demon, Devil, or Faerie spell, draw 1 card.
Whenever you cast an Instant, Sorcery, Artifact, or Enchantment, add one mana of
any color. Spend this mana only to cast
Demon, Devil, or Faerie spells.