SCP Foundation

Of course the idea is agreeably unique. However, what story are you going to tell so that it pulls in someone to read it. To be honest, it wouldn't pull me in. I'm not saying to abandon the idea at all but, make it so that it's filled with intrigue more than aspects of it that make it different than any other SCP. I would say, stick with the tortoise idea but, step back from the forcefield and resistance to poison stuff before having a story to go along with it.
Ideas for you:
1.)A large pond of carnivorous tortoises that have eaten people.
2.)A large (wise) tortoise that can speak .
In all just develop a story first and things should fall in their place.
Also you have two separate posts of the same thing on the forum.

OP, just letting you know that I locked your other thread for this idea. Given that the threads were created an hour apart, it seems like you double-posted when the first one didn't get any replies. Please don't do that—it's spammy and unfair to other people who keep one thread per idea, as they should.

Anyway, I'll repost my stuff from the other thread:

Why does it need the poison immunity? Why does it need the plant healing ability? Heck, why does it need the force field ability?

Try to think up a narrative first before throwing together the abilities. For example, all of SCP-1338's abilities are written to facilitate the storyline, even down to the kid's appearance:

Basically, your story should be something that ties the abilities together, and makes them make sense in relation to each other. The readers should think that it feels natural for the tortoise to be able to do whatever it does.

• To make it anomalous.

• The immunity to poisons could be a response to pollution.

• It likes to explore new areas because it's a tortoise. They roam around for food, so it's part of their natural instinct to want to explore new areas.