mermaid yugioh deck Complete Custom for Yu-Gi-Oh! 1500 Defense Enchanting Mermaid - LDD-S084 -

Yes you had to pay a pretty penny to be able to attack but even if you didn't want to do that you could just let her be on the field to intimidate your opponent

Energy Switch will come in handy when Meganium isn't available to double up energy, Mega signal will let you search your deck for a Mega ex Venusaur straight away, and Wally's Compassion completely heals ex cards, with energy being returned to your hand only

How do we mitigate it

Curiosa detects whitening patterns by comparing border color consistency across all four corners and both long edges

And it can be

Bleeding: Bleeding is a similar type of error to smudging, but more exciting because it happens on one of the color layers