"Yeah, you're correct, here you go." The troll reached into his pocket and tossed what looked like a perfectly lead ring into the palm of the girl's hand. "With this ring of memory, you can project the runes of a single spell unbeknownst to thee...use that spell three times, then it will evaporate to dust. Don't bother soul bonding to it, it won't work, and uh....rinse with fish oil in the event it starts turning your finger green." The troll belched, then pulled a toothpick from the same pocket as the rings and began to pick his teeth. "By the way, you haven't happened to see a small red elf on your way over? She's supposed to be getting me some coins..."