here is an easy way to throw playing cards at almost 70 mph
Step 1: What you need
just a box of playing cards i got em from the dollar store
Step 2: How to hold the card
to hold the throwing card,you put the top in between your fingers
Step 3: Heres the fun part
to throw the card you just give ur wrist a snap and release the card while moving your wrist,you may have to practice for a while,but it gets pretty easy after a while. you have to be very carful and never aim or throw at animals or people,this can really hurt,I got a really bad cut on my leg after my little brother threw 1 at me.