I am applying for a casting I'm my countrys got talent and they require to send them a video perform what do you guys think for a good camera routine with cards ?

I'm sure you are already doing some research on youtube.

MacDonald Aces might be a good option!

What country are you auditioning for? They will usually only ask for a video peformance if you cant turn up on the day and perform, e.g. if you've got equipment that will take to long to set up etc. Try and get an audition in front of the producers as it's the 'person' they look at!!

Coin Matrix can be great as well
I also think maybe add some footage of you performing for audience as well, so they get to see your personality.