Every new Disney Lorcana set widens the array of opportunities to build a good deck, and Shimmering Skies is no exception
P/T Number 105 Language English Legal Formats Commander, Legacy, Modern, Pauper, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Pioneer, Standard, Timeless Rulings (7/26/2024) Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to one Relentless Rats may become lethal if another Relentless Rats leaves the battlefield during that turn
"Gandora-G's" board wipe effect is strong, but it is an Ignition Effect (so it can be stopped by any Quick Effect removal) and it summons a monster from the Deck (so it can be stopped by "Ash Blossom")
And you can have a 3/3 on turn 3 with proliferate tricks, but I'd prefer the ramping instead
On this particular Legendary Pikachu reverse holo, the holofoil is bright and shiny, making it a solid stand out
Round out your deck with spells and traps that can protect your monsters to allow you to draw the cards you need