The One Ring in The Lord of the Rings is generally bad for you. Besides attracting Sauron's attention, the dark magic imbued inside doesn't yield many positive side effects. A particular piece of jewelry in Diablo 4 is garnering a similar reputation, since players are finding it causes them to die unexpectedly.
According to its stats, the Wendigo Brand is meant to make you more powerful the more kills you get. Specifically, getting 15 kills within 50 seconds makes you tougher and increases your life. What's not included is that wearing it could cause you to suddenly and inexplicably drop dead.