Herondalism: A system of teachings revolving around the attitudes and behaviors of Herondales, founded by Anna and taught to novices in hopes they find their awaiting Herondales.

“Remember when you tried to convince me to feed a poultry pie to the mallards in the park to see if you could breed a race of cannibal ducks?"

"They ate it too," Will reminisced. "Bloodthirsty little beasts. Never trust a duck.”