Summoning a card like Uni-Zombie off of this effect allows you to synchro summon into level 7,8, or 9, allowing to access a whole bunch of insanely powerful synchro monsters
"This is us against them, plain and simple
It doesnt seem like their cert checker is working at all for any cert other than the XRA-TEST cert at the moment, but judging from the info on that one, it does not give enough information for me personally
Worse, even in a best-case scenario for a print, the actual texturing and color vibrance is usually inferior to the Japanese version of the exact same card
Judges utilize this form to reduce disputes between players when discrepancies arise regarding deck legality
Its versatility makes it a valuable inclusion in many blue decks