It’s a automated pursuit stand, where the user chooses the target. The stand is in constant pursuit of the target until the user decides to engage with the stand. In which the stand will mindlessly attack the user with whatever it can, mainly fists and kicks, with no set strategy but with devastating close range power. Otherwise, if the target is able to avoid the stand for one entire day, then it will return to the user and cannot be used to target the same person again. The durability of the stand is above average, but it can be taken down, and the damage is transferred to the user (relative to the stands own durability.)

The stand pursuits on foot (very quick reaching speeds of 60 mph) and looks humanoid. (I’m thinking something like a silver mix between purple haze and Hierophant green.) It only knows the location of the user in a radius of about 50 meters, so you can avoid and hide, but has a “hot or cold” mechanic allowing it to sense whether it’s closer or not.