Sacrifice

Sacrifice can take on many forms. (Just roughed out here)

Possessions
When characters join the temple, whether Ahibanu, Mahdi, or Nasir al Din, they give their possessions to the temple. Occasionally, one will be allowed to keep certain items, such as weapons for warriors.

Worshippers to the temple offer a variety of possessions, up to and including family members, to the Ahibanu. Most often offerings are in the form of food, supplies, and coin.

Blood
Blood drained into any of bowls beneath the censers in the temple is an offering to Seht (or washed through certain tiles into the water?). Seht requires blood to sustain his power. Small offerings of blood generally accompany prayers and vows. All blood within the temple belongs to Seht. Both temple members and worshippers visiting the temple practice this sort of sacrifice.

Pain
A sacrifice of pain is more common among the Ahibanu, specifically the Sisters, but worshippers occasionally are allowed to do this as well. It overlaps to some degree with the blood sacrifice, but the focus of this is to offer agony to Seht more than blood. This is often done as a sign of devotion.

Power
Draining power into the water temple.

Life
At times, Seht requests the life of an individual. This sacrifice is done through specific rituals deep in the temple, and this practice is not known outside the temple. The Ahibanu consider it a great honour should Seht request this of them, and any that go to Seht's altar must be willing or the sacrifice is meaningless.