HOW TO EASILY COUNTER SATED DEVOURER! ...And an Item Idea :D
I'm just going to have these two ideas in one post since one of them is extremely short, but I digress...
The Item Idea (...or atleast part of it)
+50 AD (or more)
+40% Attack Speed (or more)
Possible Passive: Steals % or flat BONUS Armor in a manner similar to
Possible Build Path:
+ 
Reasoning: There's really not that many GOOD AD + Attack speed items in game besides
. The raw stats on
are pretty mediocre and the thing that makes it viable is it's passive which only lasts for 6 seconds and is on a 45 second cooldown.
has alot of different stats which can lead to a lot of bloat plus if you can't make use of spellblade passive then it's just not worth the price you're paying.
Now for the counter....
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Step 1: Collect 1350 IP and rip your soul from body
Step 2: Go to champion shop menu and exchange items collected in step 1 and exchange them for...
https://www.youtube.com/watch?v=BdvUR67nZs0
Step 3: ???
Step 4: Profit
Soul keeping option: 
Stupid ass memes aside, blind keeps most of the on hit effects from activating so that should counter pretty much every champion that sated devourer is buffing right now. Plus
can use it Sated himself pretty effectively himself (if you can ever get the stacks you need) and he got indirectly buffed from the AP item changes, so he has quite a few options now.

I don't think the attack speed slowing part works against him during his ult.