The Three Magic Artifacts
We live in magical times.
First, there was the One Ring of Power. It was the Silver Segular Ring, crafted by the Dark Lord, Sauron God-fearing Yidden in purity, and immersed in the volcanic fires of Mount Doom a mikvah. It was engraved with Sauron's incantations special Sheimos HaKedoshim. It had to be tied to a chain so as not to escape its bearer double-wrapped at all times. It could only be obtained via a treacherous quest in the Misty Mountains by purchasing it from Mr. Avraham Leib Schwartz for several hundred dollars, via an advertisement in Mishpacha magazine.
Then, there was the Secret Silver Blade of Fortune. "Immersed in purity with the seal of Kabbalah," this wondrous blade, when used at the proper time with the correct incantations, had the ability to "open one's mazal." It had allegedly been proven to bring "success and prosperity" to "thousands of people." While historically the silver blade was been "secretly passed among mekubalim," it was now available to the general public, in exchange for a generous donation to a certain charity.
Now, there is the Coin of Protection!
The Coin of Protection was "personally imbued" by Rav Chaim Kanievsky, "a living Urim VeTumim," "with his special blessings of good health, good tidings, and success in all endeavors." Such an amulet coin "is considered to be a protection." It can be "placed under the pillow of someone undergoing surgery," and "worn around the neck in challenging times."
According to the advertisement, there is only one Coin of Protection, specially minted, that will be raffled off to donors to Ner Echad. But, fear not! Kupat Ha-Ir also has a special Coin of Protection, blessed by Rav Chaim Kanievsky. This one has been mass-produced (and mass-blessed?), and it can be yours for a donation of just $648. "Whether you keep it in your home, carry it with you for protection while traveling, or give it as a gift to a loved one, this shmira coin is a worth far more than its weight in gold!"
Making false promises of protection or salvation in order to manipulate people into giving money, even if it's for a worthy cause, is not a nice thing to do. There are people who end up impoverishing themselves due to desperate "investment" in such things. I think that the magazines which allow such advertisements and do not print critiques of them are likewise acting irresponsibly. (Not to mention the problem with all those who contribute to the myth of Rav Chaim being a living Urim VeTumim and other such Gadolatry.)
While the Gemara has several references to amulets, the usage of amulets has been on the decline for centuries, especially in Litvishe circles, along with the actual belief in demons (as opposed to the professed belief in demons). It's sad to see it making a comeback.