Hi, i was wondering if roll out royal icing will go solid after a wile.Or if not is there something i can add to it to help this, or just use something all together?

I want to make some playing cards and also butterflies to go ontop of cupcakes.

Thanks for looking

Royal icing is a soft icing that sets hard. You cannot roll it at all.

Use a modelling compound like gumpaste or pastilliage to make playing-cards or butterflies.

i think you mal rolled fondant? yes it will get hard but gumpaste will get harder. i usually use a 50/50 mix