Cassiopeia, her mana management and a E spam mechanic proposal.

I think there is a flaw with cassiopeia design. Specifically with how much mana her E (twin fang) cost and how she can't really build anything to reduce her mana cost. The problem come in fights and during objectives mostly. She spam her E a lot and the mana cost increase really fast.

I've always seen cassio as an Ap marksman so while Ad marksmen dps (their auto attacks) cost nothing, she use 90 mana every time she uses twing fang. And we all know that taking objectives and and dpsing in team fights is essential for a dps champion.

At level 18 with a seraph embrace, she has about 2400 mana. 1 hit is about 5% of her mana bar. While doing baron or dragon you can go oom really fast.

I know twin fang deals a lot of damage so I would like a base damage reduction at later ranks (and maybe a slight ratio increase) vs a reduction of mana cost or the new mechanic that I propose below :

Here is the "spam mechanic" I propose :

Twin fang is the same as is but every time you use it vs the same target, you reduce the cost of the next twin fang by 30%. Stacks 3 times additionally. That would keep the initial mana cost but in a long span of time, that would remove her stupid mana cost.