Manifest dread in Magic: The Gathering was a new keyword action introduced through the Duskmourn House of Horror set.
The manifest dread mechanic in MTG is a spinoff of the manifest keyword first introduced through the Duskmourn House of Horror set. Much like the original, the ability has a player lay a Magic card face down on the battlefield. But WotC buffed the action by also allowing you to look at the top two cards of your library, with one ending up face-down on the battlefield and the other getting pitched to the graveyard. Here’s how manifest dread works in MTG.