On scenario 1 can the miscast caused by Tzeentch be saved by things like Gelt's Staff of Volans, Throne of Vines, Teclis, ect? It says in the scenario that if a wizard rolls a one he "must roll on the miscast table". It would be worth calling the TO before going up there to find out....
@Odom for scenario 2 check the BRB FAQ, the whole unit has to have that ability. I am actually not too concerned with capturing the fanatic as there is either a 1/2 or a 1/3 chance of failing that S test and taking 2D6 S6 hits for nothing, ouch! As long as my opponent doesnt capture it either, it could play to your advantage if they are too concerned about capturing it then right before the game is over wipe out that unit that already has damaged itself by running up on the fanatic too early.