yugioh end of the world deck Red Dragon Archfiend's Chain LOCR-JP009 Prismatic Over Frame Japanese end of the world yugioh

If that is not enough a light test or looking at the card through a loupe (or scanning the card at 1200dpi) are the safest methods (at the end of the post)

On the other hand, 7-cost Foxy is a ramp card, which can come in useful if youre deramping a lot in the late-game through Leader effect and other cards, but he also lowers the opponents aggression, lowering the Power of all of the opponents Characters by -1,000 during their turn

And its definitely something to worry about

The Stacks duty is to maintain the order of the actions so that spells are resolved appropriately

In most circumstances, Jinzo will negate any Trap the opponent Sets anyway