When players create a character one of the most important decisions they make is choosing their race. Most often players look at the race that provides the best ability bonuses or most interesting racial power to compliment their class. It’s because of this min/maxing we tend to see the same race/class combos over and over again. Introducing the Metamorphosis Curse into your campaign will force players to try new races they might not otherwise choose on their own.
Let’s assume that you’ve created the perfect character. You’ve played through a few levels and you’re really getting to know this PC. He was built to kick butt and he’s doing a fantastic job so far. Everything’s clicking. What happens if his race is suddenly changed? How does this affect your character?