“Then Darkness took me, and I strayed out of thought and time, and I wandered far on roads that I will not tell.” Gandalf the White to Aragorn & fellows
As maiar spirits, these guys had different ways of dying than men or elves or any other creature in ME save Sauron or the nine.
Gandalfs suggestion:
Could he die & his body stay in the ground?
-For Gondorian Gandalf: he will stay until Gandy the white is purchased. So if the corpse is selected a button will appear called: The new White Messenger will arrive ^^ and for 45 seconds, Gandy the grey corpes will become Gandy the white!!
-For other Gandalf: The corpse will stay and a button will appear called: I have returned until my task is done
Sarumans suggestion:
-This fellow is different, in he gets
defeated (or killed for the first time), immediately he will appear at the main fortress as Sharkey, a dirty Saruman (with half life points than the original one) with a wooden staff. He could only perform voice magic, like Deceive - Convince enemies - Confusion - etc. Also he could attack (weak attack) with his wooden staff.
But if he gets killed a second time (i mean, in his Sharkey form), he will become a wandering grey spirit with a timer, after the timer ends, a grey mist will take him out; so once more he could be revived at the fortress.
Hope you improve it with more suggestions!