A instant junk clicker will allow you to chain cast stuns, or stun/root or stun/heal
(like j boots, goblin earring, coldain ring..)
Cancel magic on gloves or spell is good for pulling mobs that are in the water
Lull can be used to pull mobs (and trains) that are out of LOS, with crit fails
Root pulling rooms can be a good way to ease when pulling and braking camps.
Farm some Ring of Shadows when you can
http://wiki.project1999.com/Groi_Gutblade
use them and keep a full recharged one to re charge them on vendors.
When you have built plenty of aggro on a mob with FoL/stun, feel free to Gheal/Sup heal others, i usually start casting a heal on a enchanter as soon as their charm brakes.
Staff of Shielding are super cheap on this server, they proc a MR hit point buff that stacks with cleric/your buffs. It prevents the use of Yaulp though.
If Your ever soloing and deep someplace and things look dire, casting root and camping is a great way to save a Corpse Run.