The First Chapter is set 1, so all of the cards have a 1 where that 5 is shown above
Lately that trend of serialized cards has been slowly making its way into the world of Trading Card Games, and this YCS season marks the first appearance of the concept in Yu-Gi-Oh: not as a foil number stamp, but as actual printed text on the Ultra Rare version of the new Prize Card , Anotherverse Dragon
Typically, people make the checklist on the computer
Another thing that was sweet about Psychic Strike was that I would intentionally tap my mana leaving up Godless Shrine, Mutavault, and Watery Grave and my opponents would freely play out spells thinking "he can only have Syncopate for two, not Dissolve, because he doesnt have UU available." Some of these players were pretty surprised (and a few annoyed) when I struck their spell useless with my very unique counterspell choice
You can only use this effect of "Tool Box" once per turn
It is very important that the pile containing their card goes into the middle