Bird One - Kingside Castling
Simply put, a spectator's signed king from a packet of four kings vanishes from underneath her hand. As a kicker, the other 3 kings in the packet become blank even though she just saw all four of the kings. There are no switches.
Bird Two - Brainwave: Card 8
This is a variation of Nick Trost's 8 Card Brainwave that does the effect in reverse.
From a packet of 8 cards with 8 different colored backs, the spectator freely (no force) chooses one of them without knowing the values of any of the cards. Yet, the one she freely chose is found to be the only Ace of Spades (for example) in the packet, and the other 7 cards are all the same - the Queens of Hearts (for example).
Note About the Cards
The above two effects will require some special cards which, for obvious reasons, cannot be included with the PDF of the instructions. The ad video, however, gives you a pretty solid hint as to what cards you'll need. They can be purchased directly from Stone Cold Magic if you don't already have the cards - you likely do have the ones needed for Kingside Castling.
1st edition 2020, PDF 46 pages + videos
word count: 8228 which is equivalent to 32 standard pages of text