Behemoth's passive is actually brilliantly designed, as a new player reads it and thinks "What?! It's immune to everything?!" because they may be used to the use of "minion" as a generic unit name. Trying to sort this confusion out makes Behemoth a training moment for new players, making them learn about minions and champions without nary a word of tutorialization.

Of course, you could just have a piece that mentions minions and champions somehow, or at least not make the "noob training" piece an Epic. But this is 𝓖𝒓𝖆ｎ𝓭 𝒅𝚎𝒔𝒊𝔤𝘯 after all.