Kiss of life
Followers of the Drowned God are ritually drowned and then revived by priests. Many ironborn are symbolically drowned as infants by being briefly dipped into a tub of seawater. Older traditions have devotees literally drowned, however. Priests and their acolytes, the drowned men, then work the arms and pump the chest of the devotee, and repeatedly breathe air into their lungs until the devotee revives. Priests are occasionally unable to revive the drowned man, with the exception of Aeron Greyjoy, who has never lost a man.
Priests of the Drowned God spoke out against Horgan Hoare, King of the Iron Islands, after Horgan allowed a sept to be built on Old Wyk. Worshipers of the Drowned God destroyed the sept and dragged followers of the Faith of the Seven into the water to be drowned, so they could regain their faith. In response, Horgan Priestkiller began slaughtering priests.
In 211 AC, Ser Duncan the Tall drowned while fighting a trial by combat in a river. Maester Cerrick, who was ironborn and had studied the practices of the priests of the Drowned God, was able to revive him using the kiss of life.
A Feast for Crows
Have courage. We came from the sea, and to the sea we must return. Open your mouth and drink deep of god's blessing. Fill your lungs with water, that you may die and be reborn. It does no good to fight.
Aeron: Rise. You have drowned and been returned to us. What is dead can never die.
Emmond: But rises. Rises again. Rises again. Harder. And stronger.Aeron: You belong to the god now.
- A Feast for Crows, Chapter 1, The Prophet.
- George R. R. Martin's A World of Ice and Fire, The Drowned God.
- Fire & Blood, The Sons of the Dragon.
- A Feast for Crows, Chapter 11, The Kraken's Daughter.
- A Clash of Kings, Chapter 37, Theon III.
- The World of Ice & Fire, The Iron Islands: Driftwood Crowns.
- The World of Ice & Fire, The Iron Islands: The Black Blood.
- The Sworn Sword.