Since nobody else seemed to be around, you decided that you might as well add some extra changes to your new friend. You casually brush your hand over his now meatier arm, and imagine sublter but decidedly more drastic changes.
Derrick moaned in slight confusion as he felt his insides tingle for a moment. You looked at his open mouth and smiled in noticing his canine teeth becoming a bit longer than before as his green eyes gained some gold specks. Under the skullcap, Derrick's eartips were developing vague points, and his nails were now black as if painted, and resemble short but sharp claws.
As the big guy turned around, still a bit dazed, and gave you a friendly hug, your smile widened: you just changed him into a werebear, and made it so that every man who would get some of Derrick's cum in his mouth or ass would share the same destiny. Derrick now owned his size and body fur to that very curse, and any infected guy would have their physiques transformed in a similar way.
"So, dude?" Derrick looked at you with his mystical, fascinating eyes. "Have you thought about my offer? I'd really love to put some bear into you, if you know what I mean..."
You pondered on that for a moment: true, the ring couldn't change you directly... but what if one of its creations could?