I don't see the advantage of flipping it back again
A larger number of colorless cards in Magic are artifacts, but there are also colorless nonartifact creatures, colorless instants, colorless sorceries, and even some colorless planeswalkers
If it has an ability that causes other players to lose life or other damage that isnt combat damage, this doesnt count either
The popularity of the Storm Scale then led to a host of other scales: The Rabiah Scale The likelihood of a plane returning The Venser Scale The likelihood of a Planeswalker returning The Beeble Scale The likelihood of a creature type returning The Gotcha Scale The likelihood of an acorn mechanic returning This led me to writing eight different Storm Scale articles: Khans of Tarkir block Ravnica and Return to Ravnica blocks Zendikar and Battle for Zendikar blocks Innistrad and Shadows over Innistrad blocks Mirrodin and Scars of Mirrodin blocks Kaladesh and Amonkhet blocks Theros block and Theros Beyond Death Throne of Eldraine through Strixhaven : School of Mages I've also written three articles on the Rabiah Scale (Part 1, Part 2, and Part 3)
And theres a bunch of cards that have surprising value here
As a player casts an omen card, the player chooses whether they cast the card normally or as an Omen
