Tahm Kench's Devour + Fizz's Ultimate= 100% hit
I was playing Fiora lately and I noticed this weried thing.
I got stacked three times of 
Tahm Kench's An Acquired Taste.
Right before Tahm Kench use Devour on me, 
Fizz used his ultimate right under my foot.
Fizz's ultiamte was "following" me, even after I got out from Tahm Kench.
I flashed + dashed with my Q but that ultimate followed me again and it finally hit me...