Dennick, Pious Apprentice // Dennick, Pious Apparition

A spell cast this way enters the battlefield with its back face up.

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.

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.

Disturb is found only on the front faces of some double-faced cards.

To determine the total cost of a spell, start with the mana cost or alternative cost (such as a disturb cost) you're paying, add any cost increases, then apply any cost reductions. The mana value of a spell cast using disturb is determined by the mana cost on the front face of the card, no matter what the total cost to cast the spell was. (This is a special rule that applies only to nonmodal double faced-cards, including ones with disturb.)

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