Sure, some of them are better than others, but they have been relatively balanced (especially over the past few years)
Players can't cast spells or play lands with a name originally printed in the Arabian Nights expansion
Supporter SARs have historically held value well in the Pokemon TCG secondary market they see play in competitive decks while also commanding collector demand for their illustrations
If enough spells have been cast its basically a 1-mana Counterspell
Love its power and synergy loads
Because there are so many different types of flaws, some cards may seem darker than expected, while others may be surprisingly clean with no noticeable flaws, etc., all of which are considered flaws by our standards, so they are equally classified as [Condition B]