Dies

Dies used to be a keyword action in Magic similar to "destroy" and was reintroduced in Magic 2012 to replace the phrase "is put into a graveyard from the battlefield". "Dies" used to be a slang term for this occurrence before and is now officially used to signify triggers. It is exclusive to creatures while other card types still use the old phrasing.

From the Comprehensive Rules (June 7, 2024—Modern Horizons 3)

• 700.4. The term dies means “is put into a graveyard from the battlefield.”