Channel Negative Energy

Channeling energy causes a burst that affects all creatures of one type
30-foot radius centered on the cleric.
The amount of damage dealt or healed is equal to
1d6 points of damage plus 1d6 points of damage
for every two cleric levels beyond 1st
Will save to halve the damage.
The DC of this save is equal to
10 + 1/2 the clerics level + the clerics
Charisma modifier.