I think these are the powers you can get from the Cathedral.
The Perfect Eye: +Perception, +ACC
You have gazed into the unblinking guardian of Rularuu's cathedral and gained power from it's influence. Your gaze pierces darkness and even dimensions. Your Stealth Detection and Accuracy are both increased. Duration: 7 days (Real time)
The True Furnace: +Max End, Res(End Drain)
You have bathed in the heat of the True Furnace which Rularuu used to construct his inter-dimensional factory cubes. The True Furnace radiates energy, which has greatly increased your endurance reserves. Duration: 7 days (Real time)
Heart of a Storm Elemental: +Max HP, +Regen
You have released the still beating Heart of Daralak, a mighty brute. The Heart increases the health and regeneration of those exposed to it's unique energies. Duration: 7 days (Real time)
Anger Monument: Enhances Damage
Viewing the Anger Monument filled you with rage and power. Your damage of all types is increased. Duration: 7 days (Real time)
Monument of Iron: Resist(Hold, Sleep, Immob, Stun)
Exposure to the Crystal of Resilience has given you a slight resistance to certain mind-affecting powers. Duration: 7 days (Real time)