Manastorm stacking

This might sound strange, but I am from the future and have discovered a bug while playing 3.9:

When you use Manastorm (see below), the effect doesn't stack. I dump my mana into the sacrifice using high cast speed, but my sacrifices are in vain: The added damage is only overwritten and doesn't stack.

My timeline is already lost to this bug, but maybe you can save yours.

I believe this will probable be like bleed without blood dancer keystone, at any given time it will use the largest buff.

Example. First cast uses all mana pool giving maximum buff, this will last for 4 seconds, successive cast will only use 5% of mana pool leading to a small buff, but any lightning damage within the duration of starting casting will use the maximum buff instead of the small buff until it runs out.

Either that or it is intended for builds that don't cast often.

I only get buff when ALL mana is removed not when im regenerating
so when it take 90% of mana or 80% no buffs

"

KingxOfxThexVoid wrote:

I only get buff when ALL mana is removed not when im regenerating
so when it take 90% of mana or 80% no buffs

so basically it doesn't stack