In early sets (Base Set through roughly the end of the WOTC era), holos were the rarest cards you could pull from a pack
Drytron cards can be pulled from Celestial Dragon and Bear Secret Packs and are definitely among the top meta decks in Yu-Gi-Oh
It is almost always guaranteed to get a card (and if it's not getting a card you should be winning anyway), synergizes with Optimistic Scavenger and Entity Tracker, and can even offer a life buffer in tight matches
Beat Cop and Taunt just get straight up better in their XP versions and we could get an Elder Sign Amulet to help with mental Trauma, though that would take up a slot we have reserved for her cross
And it would also save my butt, if I was facing a major threat I needed a few turns to find an answer foe, as I could chump block for a few turns until I had time to dig up something
You may look at the top card of your library whenever you want, even if you don't have priority