Looking at the last ~10 modern sets (Shrouded Fable, Stellar Crown, Surging Sparks, Prismatic Evolutions, Journey Together, Destined Rivals, White Flare, Black Bolt, Mega Brave, Phantasmal Flames), its clear which have stronger fundamentals
2024-09-20 Unlike a face-down creature that was cast using a disguise or morph ability, a manifested creature may still be turned face up after it loses its abilities if it's a creature card.
As a result, many cheap mana accelerators have been banned over the years
I wouldn't even fully call it a flaw , though, because decks can be built in colorless to work around or even exploit that fact
Mistake #5 After college but before Wizards, I lived in Los Angeles
If Weeping Angel would deal combat damage to a creature, prevent that damage and that creature's owner shuffles it into their library