Me and a couple other people had a similar idea for Fate Egg. When it gets hit with fire, it should turn into an omelette. We had a few ideas for what happens when it's eaten.
1: healthy snack: eater gains +5|+5 instead of +1|+1.
2: too hot: eater gains +0|-3 after eating.
3: fate omelette: eater turns into a random creature after eating.
I like the third personally