Thankfully Sated Devourer didn't existed at the patch 5.2
That was the patch where
Seastone Trident was changed to deal the missing health damage on-hit with the active part instead of dealing it over time with the passive part.
If Sated Devourer existed at time, Fizz would probably be the most obnoxious champion in the game. He would be like Master Yi, but much tankier, and with the ability to dash through walls. Fizz would be literally permabanned and would probably have to be hotfixed.