Paranormal Analyst

If you didn't put any cards into your graveyard when you manifested dread (perhaps because your opponent controls Leyline of the Void), Paranormal Analyst's ability will still trigger, but you won't be able to put any cards into your hand when it resolves. Similarly, if a card put into your graveyard when you manifested dread leaves your graveyard before Paranormal Analyst's ability resolves, you won't be able to put that card in your hand.

If something tries to turn a face-down instant or sorcery card on the battlefield face up, reveal that card to show all players it's an instant or sorcery card. The permanent remains on the battlefield face down. Abilities that trigger when a permanent turns face up won't trigger, because even though you revealed the card, it never turned face up.

To manifest dread, look at the top two cards of your library. Manifest one (by putting it onto the battlefield face down) and put the other into your graveyard. The card you put onto the battlefield becomes a 2/2 face-down creature with no name, mana cost, creature types, or abilities. It's colorless and has a mana value of 0. Other effects that apply to the permanent can still grant it any characteristics it doesn't have or change the characteristics it does have.