Kayn Spellcasting Issue
Kayn is a ninja, trained by Zed. He is also the host of a Darkin.
Aatrox is the only "pure" Darkin in League, and casts spells for FREE. (Blood magic?)
Zed taps into an ENERGY pool for his spellcasting and ninja techniques.
Why does Kayn use MANA? This makes no sense.