The design methodology of Sithicus is concisely the elimination of any one class dominating the focus of a party.
i.e. Everyone buff the tank and then standing around watching him carve a path of annihilation through his enemies is not normally viable.
The majority of encounters are capable of butchering the tank before he finishes the enemy unless they are well supported.
Brings your bards, paladins, and necromancers. You will need to crank out every buff you can find.