So this would replace Executioner's Calling similar to how Madred's was replaced by botrk.
Just some questions :
Should this be melee only, or should it have half amount on the passive for ranged champions ?
=)
Source for image : http://egmr.net/wp-content/uploads/2011/09/itemsf.jpg
They don't put AS and AD on very many items, when they do its gunna be very heavily controlled like the new "Feral Flare". Also I like the current EC active, why change it?
I like the idea of stacks, and this honestly makes the item feel like a Healing Reduction version of a Black Cleaver.
Also, I'd like to know the build path for the item. Considering it's a 2950G item, then it would probably be a Legendary quality item (maybe Mythical?).
I like the idea of revamping Executioner's Calling, since its a bit useless. After all APC's have 
for Grievous Wounds. My thoughts on it are the parasite passive needs tweaking, cause the way this item is made out to be looks more like a standard adc item in tandem with 
instead of a situational item that it should be.
Here's what I think:
Make Grievous Wounds the passive, and have it apply when dealing AD based damage to someone (auto attacks or abilities stacking with AD)
It's active can be the parasite (cause I think it's a cool idea). It will still slow the target, but the parasite will do a flat percentage of reduced/enhanced healing, around 5-10%
Finally, I believe that the attack speed should be replaced with armor pen (not like last whisper crazy, but like 15ish%). The attack speed coupled with the healing degeneration would just make this another core adc item. By replacing the attack speed with armor pen, it makes it a viable choice for the typical ad bruiser/tanky in the top lane or jungle, but it isn't a strong core item so it isn't a necessity.
I really like the idea, those are just my opinions on tweaks
i don´t know, i really like executioners as a situational, cost efficient pickup. I think the only thing that really is missing for Executioners is just an upgrade-possibility (so quite that direction gold-wise, but other setting stat/active-wise).
