§ 727.1 Core Rules PDF (officieel)

A Dependent Keyword is comprised of both a Condition that it is short for, and an ability of some format immediately after the Keyword itself. Example: Noxus Hopeful has “[Legion][>] I cost [2] less.” [Legion] is short for the condition “if you have played another card this turn, this card gains [Text],” while “I cost [2] less” is the dependent ability.