Le texte de règles de la carte Sokka's Haiku forme dans sa version anglaise un Haïku : trois vers dont le premier est composé de cinq syllabes, le deuxième de sept et le dernier de cinq (voir aussi cette anecdote).

Source (Lesson Three: Make Use of Lenticular Design - "It references a haiku, a type of poem known for having a specific structure: a line of five syllables, then seven, then five. The rules text for the card is a haiku (at least in English). [...] But for fans of the show, it's not just anyone doing the haiku. It's Sokka, who makes haikus in the show. That gives it an extra level that I can't appreciate, but I can still enjoy the card without that knowledge.")