From the start, you can pretty much send Vishra in and go get lunch. These mobs have a lot of health (HP), and hit pretty good, but Vishra is way overpowered. He heals the group often and my decent geared monk (some raid stuff) couldn't pull hate off him with straight damage in Reckless, even while doing twice Vishra's DPS.
Nothing in the zone fears or kicks worth a darn, so don't bother with the crabs around the edge - run a beeline for the Queen and get it over with.
As with any game-provided pet, watch pathing. A couple times I ran in to pull mobs and it was several seconds before Vishra showed up and pulled hate. A mage probably wouldn't have lived long enough. Send him first if you aren't sure you can take hits.
Nice charm reward, but the missing Red adornment slot is a bummer.