Possible problem. Phase rush and tahm kench.

When turning what used to be stormraider's surge into phase rush, I don't think Riot thought about how the changes would interact with .

Just faced this terrifying combo and it was absolutely hilarious, definitely caught me off guard and I laughed my ass off every time he carried me away at a million miles an hour. Was just so shockingly hilarious as it was so unexpected. Did end up losing but it was mainly because we just fked around and the minions ruined absolutely everything. Tried to see how far he could carry me, he got from his inner turret all the way to his fountain before spitting me into it XD

However it does show a small problem in that the one weakness of tahms W (a 95% slow while enemies are eaten), is not only lessened but is completely nullified with an obscene amount of movement speed to spare.

For a quick comparison between old and new: Stormraider's Surge: Dealing 30% of a champion's maximum health within 2.5 seconds grants you 40% bonus movement speed and 75% Slow Resist for 3 seconds.

Phase rush: Basic attacks and abilities generate stacks on enemy champions hit, up to one per attack or cast. Applying 3 stacks to a target within a 3 second period grants you 25% - 40% (based on level) movement speed and 75% Slow immune icon slow resist for 3 seconds.

The basic combo was AA Q AA W. So he procs phase rush before eating me, sending his move speed to 418.75 (without boots) and reducing the slow from his W to 23.75% (due to 75% slow resist from phase rush). So now tahm's move speed is only reduced by 15 of it's current value, down to 403. This value was enough for tahm to take me from about the middle of top lane, and spit me out underneath his tower with almost nothing to be done in retaliation pre 6.

Can't run away due to his E slow, and I can't remove his stacks so whether I like it or not, at some point he's eating me and spitting me out. Whether it's under a tower or in his team is up to the tahm. Now imagine this with and a for the AA reset (to get the stacks on faster). It's almost an instant combo which results in you being eaten and carried away at a startling pace. He could have added or if he wanted to go mad enough an AP/AD item that granted % move speed increases.

Not sure how swifties and phase rush interact, but if it's additive it results in 100% slow resist for 3 seconds or if not something like 80% slow resist for 3 seconds. But also with 55 additional movement speed to chuck into the percentage amplifier

On several occasions he came out of no where, did his combo under one of our towers, ate someone popped his E and ran away, and there really wasn't much we could do (especially if they were alone).

While this interaction would definitely be fun and funny to use based on facing it, I don't feel it's healthy to have a vital weakness turned into such an obscene strength via a keystone, particularly with such little counter play as in theory it could all be point and click (3 AA then eat). Potentially either bring back storm raiders surge or make tahms W an exception as an interaction like this just doesn't fit in the game, as amusing as it might be.