You'll get a bunch of champs you already own and most likely get skins that you own or have no interest in owning. I bought a 10 pack to test out hextech crafting, and i will never be buying them again.
I did the same, but the champions aren't really wasted because you just disenchant them to fund your skins.
Hextech crafting seems like a gambler's game. I don't like the random aspect.
Personally, I'm just going to buy skins/wards/icons I want directly from the store. It's a waste for me to buy boxes and hope I get something I like.
(And no, even the free boxes are worthless to me, with how slow it looks like you'll get them combined with the randomness.)
