WABBAJACK, you say? Mortals, please enjoy this special gift from your dear Uncle.
The Wabbajack is now an AOE. And the person with the least amount of alliance-whats-its gets it for 5 minutes before it reverts to the next down-on-his/her-lucker. Want to take one of those infernally insufficient blobs of stones you sorts call a keep, that in truth couldn't keep anything in or out, or besides even? ...in a single cast?
Well, that depends what everyone turns into, doesn't it? DOESN"T IT?!
If they're all rabbits, sure, the place is yours to sip all the wretched sujamma you can guzzle, at your leisure. Though,
The very thought of this puts me to sleep for a bit with excruciating and exasperating tedium, so methinks there is ONE. TINY. CAVEAT.
No matter how many fortunate, or unfortunate, victims of the Wabby there are, NONE WILL BE THE SAME.
So if they all turn into the various members of the Flying Frostbite Spider's Circus Battalion, and don't much want to give up the Keep, don't come crying to me! Or laughing, either! It's naptime, and I need it QUIET!!!!!
Mostly Sincerely,
Uncle Sheo
Especially amazing would be daedric ultimates giving access to the legendary daedric artifacts you got in other games, in the same way the fighters guild ultimate is Meridia's sword Dawnbreaker. So a sheogorath dungeon could give the wabajack ultimate, which works like a fear/stun but visually your character is transformed into a random critter for a few seconds (or until you cc break).