what do you mean 'wonder cards'?
Die? In what way do you mean?
Im not sure if you ment 'wonder cards' or 'wonder guards', but a wonder guard is when Pokemon can only get hit with super efffective moves such as sheer cold.
The two Mystery Gift options can only be used by hooking up to a machine at a Pokemon event. There is no such thing as a Wonder Gift - there is only Wonder News and Wonder Cards.
On the Nitendo WFC.
If you have 4 wonder cards (i think) you cannot get any more spacial events. so therefore you delete them so you can get more events
Wonder Cards are downloaded through wireless connection with another DS, Nintendo WFC, or connection to the Wii and games like Battle Revolution.
You trade the Pokemon from the wonder card to a different game then you go back to the menu go to mystery gift click on wonder cards press a on the one you want to delete then select delete.
You can get them in Byrnes : World of wonder
No. Simple as that.
There is just go to a Nintindo event.
Because there is!
You can only send Wonder Cards over to another game if they're programmed to be sent over otherwise you can't send them over.