Cleric buildings...

[Jackaroo]

it means the monsters will come for you and attack you whilst healing

In other words, say the fighter in your party is pounding mobs and you heal the fighter, you can draw the mobs onto yourself. It happens more when your cleric is stronger than the others in the party, but it still can happen at any time.

well my lvl 64 cleric build is 15 spr 30 end rest str
yea its all over the place but it works good for me

[Silent Wizard]

aggro = drawing agression such that the beasts come 4u. u need to get the aggro when pulling a mob.

[CarlaKiller]

So play as cleric mean heal and run only?