Dennick, Pious Apprentice

If you copy a permanent spell cast this way (perhaps with a card like Double Major), the copy becomes a token that's a copy of the card's back face, even though it isn't itself a double-faced card.

The second ability of Dennick, Pious Apprentice affects only spells and abilities that actually target cards in graveyards. Spells and abilities that affect cards in graveyards without targeting them may still affect them, move them to other zones, and so on.

"Disturb [cost]" means "You may cast this card transformed from your graveyard by paying [cost] rather than its mana cost."