Slows and mobility, why not have slows root if they exceed a certain cap ?
Slows already stack with a deminished rate, they are widely available from 10% (
&
E rank 1) to 65% (
&
E rank 5 )
There are champions with stronger slows like
R ( 99% )
Q ( 70% )
W ( up to 95% rank 5 ) but they are rare in general and can have special tweeks as needed.
What if, when a champion is slowed for above 75% they are rooted for half the remaining duration?
That seems like an amazing solution to mobility creep which does not fk over immobile champions at the same time, especially because of the availability of tenacity.
So when
slows a target with his rank 3 Q [1.5s duration], then
follows up with Frost Shots, the target is rooted for 0.75 seconds, consuming
's Q debuff.
-_-
Edit 1: the most straightforward way to give counterplay for massive slows like
&
is not allowing movespeed roots to happen from a single debuff. Maintaining the 90% slows until a teammate slows the target.
-_-
Edit 2: examples of the formula's implication to clarify:
casts a rank 5 W on a target, he then auto attacks the target while he has a
. The calculation to determine the root goes as follows: W = 45% slow debuff,
= 30% slow debuff. 45% + 30% = 75%. 75% > 75% FALSE.
Therefore the target is slowed as on live.
another example with a stronger slow:
casts a rank 5 E on a target, she then auto attacks the target while she has an
. The calculation to determine the root gives: E = 65% +
= 30%. 65% + 30% = 95% > 75% TRUE, MERGE DEBUFFS INTO ROOT. USE LAST APPLIED DEBUFF.
Therefore using the duration of
, the target is rooted for .75 seconds.
-_-
Edit 3: created a post in the comments mentioning champions that can have abuse cases with the system, upvote so everyone can see :)
-_-
CLARITY: in order for players to understand and take advantage of proposed formula, a small visual change must be done.
Currently on live, when a champion is slowed they leave Yellow tracks beneath them as they walk. This formula can be further improved by changing the color of the tracks to Red when a target is "Critically Slowed", meaning that they have a 40%+ slow debuff applied to them.
This way both the slower and the slowed target understand that a root can be performed with a good slow followup.
"CANNOT BE SLOWED"
and
). I also think that would offer valid opportunities for counterplay. Suppose you dash through a pool of Mega Adhesive or Glacial Storm: right now, you'd dash through them as if they didn't exist, but with the above change you'd be affected by the slow as you'd pass through it, which would reinforce the role of both those objects as persistent zones of crowd control. You'd be able to use the extra time offered by a slowed dash to jump out of the way (if they're dashing towards you) or catch up to them (if they're dashing away from you). I don't think Cataclysm is a good counter-example to this because
is immune to crowd control while using it anyways. By contrast,
would be a great example of how such a change could allow for more consistency: right now, her infinite dashes allow her to completely ignore slows when in effect, which makes her a pain to deal with when you're a kiteable champion with only soft CC (
, for example). Having slows affect her Martial Poise would allow for CC to interact better with her, and offer low-mobility champions more opportunities to catch up to her.
with a
and max rank
W + ult can root for 1 second. Might need a nerf.
has an 80% slow on her Q, might need a nerf. It is worth noting the system should be slow exclusive, polymorphs and fears for example slow the target however are ineligible for the "Critical Slow" system.
E + Q will root for .75 seconds once Q is rank 2. Should be nerfed.
E + R will root the target for 1.5 seconds max. Imo that sounds like a cool interaction that gives nunu the ability to reliably hit 1 target with his ult, but generally I think his R AoE slow might need a nerf.
&
E slow amount values reach high amounts causing potential roots to be easier than they should be. Might need a nerf.
can E -> W to root the target for 1 second. It sounds cool, but should probably be looked at.
W empowered slow rank 5 is 80% decaying to 10% over the duration, it's good to have it monitored.
, whose lack of hard CC is one of his main draws (and the reason I almost always get Rylai's on him).
&
) with the exception being
's root, 3s.
will reduce the amount of slow, thus negating cases where a target should have been rooted.
even the supports have mobility spells
E.
usually has utility or stats to defend himself for a short duration. A long duration slow really, really screws immobiles over.
/
vs
E. (
and 
slow resistance masteries, use gapclosers before too many slows are applied.

's was removed.
's case would give incentive for enemy champions to slow him more, buffing tank Garen since he's drawing aggro away from his allies.
+
+
instead of
.
Etc.
mid +
top will root enemy teams because of it, that's not the case.