Sure, there's ways of doing that. Here's how I'd do it, myself:
First, create a custom State. Call it Shadow Clone-- Naruto. (You will need a unique version for each character who has it, and there's no getting around it. Sorry.) If you like, give that State something like an Evasion bonus, to simulate people not hitting the real one, but that's optional.
Create a State Animation that has lots of images of Naruto all running around. (If you don't know how to create a custom animation, let me know. I did a screenshot tutorial of that a little while ago, and I could probably link to it.) This will be the animation for that State.
Now, the skill. Make a "Shadow Clone" Skill, Self Only, that puts the user in the Shadow Clone state. But also have it call a common event-- Shadow Clone Skills, we'll call it.
That common event, in turn, will teach Naruto the Shadow Clone Attack! skill.
The Shadow Clone Attack! skill, in turn, will call another common event when it's used.
That common event will Force Action (Immediate) to make Naruto attack, say, a random target, or maybe the last target if you want to just pound one guy into the ground. But there's lots of Shadow Clones, so include about five Force Action commands.
Now all you need is a way to make the Shadow Clone skills go away, and the details of this will depend on how you want it to work. You'll want something like a Parallel Process event removing the Shadow Clone Attack! skills from Naruto all the time, assuming that they go away after a fight.
In addition, if the Shadow Clone state can go away during a fight, and presumably it can, if Naruto gets KOed, you'll need a Battle Event in every Troop checking every turn if Naruto is in the Shadow Clone state-- and if he's not, deleting the Shadow Clone Attack! skill (s).
So, yeah, it's complex.
And if you want the clones to have full turns, where they can do any action of their choice, well, that's time to learn how to script, my friend.
