I've got a young group new to roleplaying.  I've started with a short encounter with some cultists that led to them encountering a semi-friendly witchhunter (who was killed by the cultists) and finding the location of three other cult cells near Kislev.  Now my plot is after clearing the next cult cell, they will encounter another Witchhunter who will fill them in on the Nurgle priest, Thelin Dimbrunnen, who is behind their activities in the region.

  The witchhunter will compare notes and offer to take one of the other two known cells and send them to the remaining location where they will encounter a few undead, about 7 cultists in various locations and finally Thelin who summons a nurgle beast to distract the party while he escapes down a hidden trap door.

  He will then retreat to the woods into an old Elven ruin (for their next adventure) and summon a few more undead via scrolls he acquired through a necromancer (for a further adventure) and during the final battle I was thinking of having either a troll or two or an ogre or two descend upon him and after smashing him to bits turn upon the party,

  This is my quandry, I ordered the creature vault but it wont be in til next week and dont have a full bestiary to see if this would be a bit much for a new rank 1 party.  I have an NPC Initiate of Sigmar with the party to aid in healing, but they're 3 wood elves new to roleplaying entirely.  I figure if it gets a bit dire I could have the Witchhunter ride in at the last moment and aid in the final battle too.

  So, ideas or stats on Trolls, Ogres?

Found the trolls, they seem pretty nasty.  Do you think one troll vs a rank 1 group of 4 is too much?

You can always have the troll run away or get distracted for a round or two.  You can also use orcs instead of ogres.  "Running away" or "he seems sickly" can justify having him die at a tense moment in the encounter (right before he TPK's the party ;)

You might find what you'e looking for here: http://www.cutlass.be/rpg/wfrp/creatureview.php

jh

thanx I just read up on stupidity and if it gets too severe that's a great strategy.  Or he may just begin feeding on the nurgle priest and let them get a few whacks in.