Wizman uses Enhanced Spells. They're super-effective!

[robertGN]

Staff of Cthulu: First enhancement allows the tentacles on the staff to grab on to you, letting the staff go in the backpack slot. This gives you two hands free, and makes it impossible for you to drop the staff. You can still cast spells while it's on your back. Second enhancement will give an O2 toggle and jetpack toggle at the top of the screen, effectively turning the staff into an infinite jetpack. It also makes you immune to the effects of space while holding the staff. Third enhancement allows the staff to disguise you. Right-click the staff in your hand, and select a job choice to take on the appearance and voice of a randomized crew member. (I.E. anyone that sees you will see a randomized crew member, such as John Henks the Clown. Examining you will show your true self)

Maybe make it less changelingy? I mean a full staff is pretty much just a shitty changeling.
Plus, the mindslave idea was good, it would require you to get CLOSE to your target and hit them, preferably breaking your disguise,