Multilingualism in indigenous language communities brings forth tensions and creativity related to language change. In this article, taking dynamic multilingual indigenous Sámi language practices as a focus of ethnographic and discourse analytical research, I examine rhizomatic discourses on changing language in multilingual Sámi spaces. Based on longitudinal research on multilingualism in Sámiland, I will argue that the interlinked discourses of endangerment, commodification and carnivalisation simultaneously circulate across Sámi spaces, and structure language practices and experiences. Furthermore, multilingual dynamics can lead to both contestation and creativity in language practices, and may call into question various established perceptions and definitions of language and of related concepts.