Neo Revelation is not as easy to weigh as early WOTC, so all packs will be weighed from the box and the 12 heaviest packs with be the only packs opened up. The lowest 24 will be shipped sealed. The backside of the packs will be marked as heavy or light and will be mixed together after being weighed. Packs are then randomly selected before revealing if they are heavy or light. It is possible that your heavy pack does not contain a holo. If opened in a video then the holo guarantee stands on this box, so you would get another pack or refund depending on what is available. I will do my best to minimize risk, but Neo Revelation is not as well studied and weights may vary.