Shadow by Alex, Wenzi & MS Magic
An impossible signed card transposition from the mind of "Alex".
"Shadow" starts by placing a blank card inside a windowed envelope and allowing the spectator to sign it. You then invite them to select a playing card which is lost in the deck before vanishing entirely.
Their signed card is removed from the envelope. Impossibly, it is no longer blank. It is now their selected card with their signature on it.
This is just one of many effects possible with "Shadow" by Alex (with support from Bond Lee and Wenzi.) It's also great for mentalism effects like Out to Lunch.
Super easy to do and practical for close up magic performers and mentalists.