Remember that you make tokens if your non-tokens are destroyed, removed, bounced or exiled, which so happens to include a lot of board wipes
Angelic Sleuth is a white 2/3 flying creature, and it can investigate whenever another permanent the player controls leaves the field, using the mechanic that was introduced back in Magic: The Gathering 's Shadows over Innistrad set
If at least one target is still legal, the spell will resolve but will have no effect on any illegal targets
That alone makes me feel okay about jamming it into most of my Naya decks without having to stress too much about whether Ill draw my Colossification, Mossbridge Troll, or Serra Avatar
But at the end of the day, this also makes it so that you can get cascade by doing damage through means other than commander damage
The remaining new cards in the deck are less obviously about manifest dread or face-down permanents, but two of them also work very well with manifest dread