Why does manaless exist
Because riot thinks its creative
Because riot thinks its creative
because some abilities aren't magical
because resets and low-impact abilities (not that i don't hate her) she'd be really weak if her reset train was halted by mana (it'd be funny to see that tho)

because his design is about juggling his own health
same as above, except done a lot less gracefully
She really wouldn't function well with mana costs. I'd prefer that she didn't exist though. I hate laning against her