SurvivalAn ability word has no rules meaning of its own. It groups abilities with similar themes; the text following it explains this card’s effect. (CR 207.2c) — At the beginning of your second main phase, if this creature is tapped,
manifest dread“Manifest dread” means “Look at the top two cards of your library. Manifest one of them, then put the cards you looked at that were not manifested this way into your graveyard.” See rule 701.40, “Manifest.”
An ability that triggers whenever a player manifests dread triggers after the process described in rule 701.62a is complete, even if some or all of those actions were impossible. (CR 701.62). (Look at the top two cards of your library. Put one onto the battlefield face down as a 2/2 creature and the other into your graveyard. Turn it face up any time for its mana cost if it's a creature card.)