so i attack an enemy then use a branch and it will fo9llow me as a follower?

Does anyone know what enemies can be charmed? I highly doubt it could be just anyone, that would be kinda strong.

I used it against a slug, and it spat at me... v_v

I tried this on the cocoon and Balaid or whatever when he went berserk :( it didn't work in either case

Does anyone know if when used while invaded will the bewitched enemy attack the invader?

Works good for Commander Niall fight. You can basically steal his two summons and get them working on your side.

This can be used to charm one of the knights in the Commander Naill bossfight.

Tried to use it on the fatty demons, doesn't seem to work tho.

The charm effect lasts for 3 minutes and will remain even if you run far away from the charmed enemy, until you go far enough that they despawn, of course. Enemies do not have to be physically struck or damaged by the bewitching branch's thrusting animation to be charmed. The actual charming attack seems to be the poof of pink smoke after thrusting, which emits a brief area-of-effect in front of you, because multiple enemies can be charmed with one use if they are bunched up in front of you.
Charmed enemies using turrets like ballistas will use them against visible enemies. Charmed enemies do not follow you, and if no hostile enemies are close by, they either stand still or seem to return to their spawn point or where they are scripted to stand or do an animation. For example, those packs of flying bats, if you aggro one single bat away from its pack then charm it, if will fly straight back to its pack. And be killed by its fellow batmen. Another example is the patrolling banished knight by the Rampart Tower elevator. If charmed he will resume his scripted patrol back and forth.
Charmed enemies will not attack other charmed enemies, they only attack enemies that are close to them and actively hostile to you, for example I charmed a miner and he did not attack the other miner right next to him, when I punched the uncharmed miner and he started chasing me, the charmed miner attacked him.
Charmed enemies cannot be locked on, but you can still attack and backstab/critical them. Charmed enemies will never retaliate if you attack them, and attacking them does not reduce the duration of the charm effect.
Be warned, you can still be harmed by a charmed enemy's attacks, stay out of their way if they are dangerous.
Confirmed uncharmable enemies:
Giant trolls, grafted scions, lesser runebears, godrick/radahn/ect. knights, kaiden mercenaries, giant and lesser spider hands, direwolves, and flame chariots cannot be charmed, and it is safe to assume bosses and such cannot be charmed.
Noteworthy confirmed charmable enemies:
Ogres, living pots, the caster atop the Highway Lookout Tower, and that flame-dust-spewing ***** at the Village of the Albinaurics can be charmed. While the last two sound useful, their actual practicality is limited. Charmed enemies do not follow you or search for enemies. Their lines-of-sight and hearing radiuses remain unchanged so in other words, they are almost blind and deaf. For example, the caster atop the tower will not snipe at everyone that spawns at the road below, because he is not looking in that direction and there is no way to make him look down there.
Basically, you must lead enemies to your charmed enemy, not the other way around.

TL;DR This is a ridiculously rare and niche item and I struggle to think of a good use for it beside some kind of hypothetical speedrun strat where you charm a powerful enemy so you can kill it effortlessly and take its drops or something.