The immunity gene I choose is: Two bat wings. So if a nicheling is born with two bat wings, they are immune to commands.
Every two days, one command happens, on Grass Adventure.
Now time for some story stuff or something
So some nichelings migrate to a new island, and after a few days, strange things start happening.. A nicheling grew bearyena-like claws, the eye color of one changed, one switched genders, and nichelings started disappearing.. Soon, only two were left, Lalensi and Smiloku.
A wandering nicheling told them a tale. "A long time ago, on this very island, there was an unfortunate nicheling, her name was Sira. She was kind of an outcast. She had bat wings, and sharp fangs, and ram horns. After she died, strange things started happening, and this island seems to be cursed. I've tried to leave, but somehow, I can't, it's like I always come back. My time left is short, so I pass this tale on to you." They didn't see the wanderer again.