[Eikinskjaldi]

Well a standard deck has 52 cards so you bbcode would probaly look more like [cards]5[/cards]. With private text you could be on your way to having poker in threads. as far as limiting it, ya, it could be limited, it'd be as simple as stoirng the values in a array and testing to make shure none equal eachother.

However back on dice, Another idea is a prompt box which you can enter the number to roll after having selected the sides from a drop down.I'll look into that avenue. I am going to making a steep departure from the old system of rolling dice as it doesn't work for me, so this drop down idea won't work for me, in any case, all that well. Seeing as I help run one of the largest gaming sites for PbP it isnt easy to keep everything simple. A sample new style roll would be:
[dice=Dice Title]1d20 1d20 1d6[/dice]

Which would provide a much cleaner more cingular less bulky output. I also don't want images, so I will probaly provide to XML's, one with them and one without. If you visit my forum and check out some of the dice rolls you can see the output I will probaly be aiming for as I want to try and keep my dice standard.

The cards thing shouldn't be to hard and i'll look into it if I have time.