Variation of Glimmercrab, Sunset version.
 
When you use Shimmercrab as your sentient campfire, use a frying pan or metal sticks to cook your food on her mane. She is attracted towards parakeets, geckos, and anything that is purple, which she will drag into her lair somewhere deep within Crab Island.
 
Unfortunately, the last item in the list also includes the poor camper who is holding her.
 
Later in the night, Twilight should better sleep in a fireproof shelter, because her purple skin would attract scores upon scores of burning Shimmercrabs. As if one Shimmercrab would not make you sweat already, just imagine how hot a Shimmercrab swarm will be!