Yellow cards in stack are dispensed one by one.
Input: orange shaft that gives green slider reciprocating linear motion.
The lowest card is pushed by pink vertical slider which has prismatic joint with green slider.
When the pink slider goes back, it descends a little due to the contact between its oblique plane with the lowest card. If there are only few cards in their stack, the pink slider pushes them up during back stroke.
Weakness: the pink slider may scratch lower surface of the card.