Freythorn BOSS - help me to understand

I recently started my first ever HC SSF.

Got to level 11 - freythorn boss, its the boss after you clean the 3 rituals.
Now, I have anti-stun charm equiped, yet, he stun me for 4-5 seconds, I CANT move at all.
What kind of stun is that ? Immobilize ?
Then when im finaly free after 5 seconds, I still cant attack.
What kind of debuf is that ?

I dunno how, but I survived, but getting unable to do anything for 5 seconds is rly weird mechanic, in that early stage of the game.


The boss fight is like, from 30 seconds, you are 20 seconds perma-stun-locked, waiting if you are dead.

I dont like that.

Why did you move? Purple
Why did you sit still? Red

There's your 5 seconds of root.

Sorry, I have no idea what you mean.

Can you give more details ?

It's a debuff that petrifies you if you move while it's being applied.

I tend to ignore the "don't move" bit and just move as far away as possible so the follow up attack doesn't hit so hard

aha, so its petrify.

HOLY.

There are this two debuffs from The King in the Mists. "Don't move": a red circle is around you and a debuff icon appears with a 5 seconds counter in your debuff panel. When the counter reach 0 and you are moving you get locked for a time. The second one is "Don't stop": a green circle appears around you. Now you have 5 seconds to move around or get locked for a time when the counter reach 0.
Hope this helps.

thank you