I can do the move I just forgot the name, I think he teaches it on the video where you make 2 cards jump out of the deck using a rubber band. It can be used to control cards to the top or bottom of the deck.
It's not a half pass. A half pass reverses cards, it doesn't control them to the top of the deck.
He does a Hermann pass to control the king.
Then he performs what looks like a straddle pass to control multiple cards to the top of the deck.
That's my guess.
Other moves in the video include the Rel Change, Paintbrush Change/Airbrush Change, Cardini Change/Ego Change, DPS(Diagonal palm shift), Rub a dub vanish, then I think he does a classic pass though I'm not sure, then a dribble pass, Then he messes around with Looy Simonoff's Flippant, and the duck change.