who gave Gandhari

100 putro wala vardaan

Lord shiva gave her vardaan.. gandharis father mentioned it once in the show ..

Didnt bheesma mention it in the yesterday's or day before yest's epi when he goes to ask gandhari's father for gandhari's hand?

oh okay okay i did not hear

As mentioned by her father, the vardaan was given to Gandhari by Lord Shiv. Maybe they will show us a flashback sequence of her being given the boon later on, perhaps when she is pregnant. Or maybe they won't show it at all.