U can do sac and pull in everyyyyyyyy low dungeon.
Not even kidding.
Pro tip that is not noob friendly:

- blm = sleep nuke
With this knowledge you can try
Sleep reset pulls
Tank grabs every monster in the way ( normal sac and pull )
BUT the tank then makes a 180 and runs alll the way back thru the map; far enough so that blm can sleep nuke all the monsters thus rooting them in place. WITH THEM IN PLACE you can then run forward and hopefully step out of their tether zone thus BREAKING THEIR EMNITY LEASH = them returning back to their original patrol area.
This is for when ur tank doesn't want to die and is actually faster but harder to co ordinate.

9/10 monsters in pre 50 dungeons can be slept.

The more you know the less dumb you'll look when trying to attempt it lol