You can send up to 2 Spells/Traps from your hand and/or field to the GY, draw that many cards. If this card is in your hand: You can send 1 Level 6 or higher Spellcaster monster from your Deck to the GY, then activate 1 of these effects,
Special Summon this card.
Send this card to the GY, then, you can Special Summon 1 "Dark Magician" or 1 "Dark Magician Girl" from your GY.
You can only use each effect of "Magicians' Souls" once per turn.