How would I implement the animation into a tool so when you attack but you can't move but after your done you return back to the normal robloxian stance
You should fix your grammar a little bit, don't know when or why the player is stopped. Or if the question involves the player being stopped.
I am assuming you are saying how to stop the player when the animation is played.
Simply, go to the character's torso and anchor it, the character is located in Workspace and it's torso is in the character.
Or else if you want the player to go back to how it looked because of how your character got stuck in that animation after attacking, copy the script that controls the animation, and make it after when the script is finished attacking, for it to reverse all the CFrame values used to move the character's limbs for animation.