Same answer as predicted. Fantasy is thrown out the window and logic and physics is shoved in. So much for creativity, staying to a theme and it is true rules are written in stone. Man did Guardians of Order get it right. RIP.
Can a thrown playing card deal 1d4 + str mod if used with the Tavern Brawler's Improvised Weapon ability? If not, how can I use a deck of cards as an ammunition-based throwing weapon?
And here's the inspiration: https://www.youtube.com/watch?v=PxB5CseJqDg