It also occurs to me that if we're going to get an enfeebling-oriented SP, it should also let the spell overwrite any existing status on the monster. I'd hate to go and use this piece of crap to try and proc Slow or something on a Voidwatch mob, only to have it have no effect because the BLU was trying to proc an earth weakness or whatever.

But really, the overriding immunities is not optional for an ability like this. Seriously, do they think it will break the game in half if we can (shock! horror!) prevent one of their precious monsters from casting a couple of spells once per event? Oh no, a Legion mob lost a handful of attack rounds! Call the WAAAAAHmbulance!