Traveling Island

[Cinnamochix 12]

I’m currently on season 8 of mlp and I had recently discovered on episode 13 that there’s a traveling tortoise in Equestria? This had made me really excited as I love these types of creatures! 
 

I was thinking adding them into my au as i would really want to implement them! Though I’m not sure if they should be uncommon/rare or if there should be a sub-species as well! (Will probably be a sub-species for it in general)

Any ideas would be great if anyone has one!