Warden Class Mastery Script is one of the most broken "abilities" in the game, especially if used defensively. This is how it functions:

Not only does it snare players for 70% in an 8m radius, it also charms them for 3s (which btw is still a buggy mechanic and can cause them to get stuck in objects or unable to break free out of). If nobody gets charmed, you restore 1.4k mag AND stam.
Like.. What?? Standard CC immunity duration is 7s, and this skill has an 8s cooldown. If you use the Charm off cooldown, you will maintain a 87.5% uptime on this effect lol.. Even if you don't stun anybody, you are still snaring them by 70% and also netting 1.4k stam AND mag which translates to 358 stam and mag recovery.
If you've ever fought players using the Charm, you'll know just how absurd it is when used defensively. Most players use the Warden Charm on Healing Soul, so the only 2 options you have are:
1) You pop an immovable potion which lasts 16s and requires you to save it for that specific offensive window. If your opponent can survive the window then you may not have another shot.
2) You have so much burst that they die before the Charm effect takes place.
Otherwise, it's almost a guaranteed recover for whoever is using this script. That is exactly why the majority of sweaty players swapped to Warden base class despite only using 1 Warden line. It's to gain access to this class script lol.
Warden Charm needs to have its duration increased to 15s at the very least so that players can't just spam it off cooldown and maintain an almost 100% uptime. It's absurd.