What do you think what's 'secret' bonus which will get the winning house?

I'm thinking House points, Frog cards, or a book. Something like that. Might even be a few Galleons

mabey new spells or sneek peek from cos or you might find out what the locked medal thing is on the top left side of the pottermore page (i think it might be quidditch battles to earn house points) hope i helped
From: FelicisHeart12312