all yugioh booster boxes Yu-Gi-OH! Maze of the Master Box [1st Edition] (MZTM) SEALED Oh experience Booster Pack | Yu-Gi-Oh! Wiki

Can be used if your Life Points drop below 500

A sealed Booster Box of XY Roaring Skies which contains 36 Booster Packs of XY Roaring Skies

In fact, Fist of the Beast King, Leomon's signature move, can be found in the Digital Hazard booster box set and can be used when Beelzemon is on the field, referencing the death of Leomon in Tamers

" Cyber " magic card 4.1

UR Ultra Rare Number 3: Numeron Gate Trini X LIGHT Rank 1 [ MachineXyzEffect ] ATK 1000 DEF 100 3 Level 1 monsters Cannot be destroyed by battle

Because if they do look at fan submissions and later come up with something similar to the fan submission, they put themselves at risk if the fan claims that the official product is a derivative work of their submission