@Meddler These Rylai's changes miss the mark, and don't address the problem of mage perma slows
I think everybody can agree at this point that Rylai's was problematic and needed changes.
General consensus was that the AP is too high, the slow percentage is too high, gold efficiency is too high, and it should no longer be attractive to the mages that build it solely for the efficiency rather than the passive (which champions those are is a topic of debate) Additionally, quite a few posters pointed to the ability of mages to PERMA SLOW other champions as one of the most problematic aspects. So many, many, many weeks later what we get is not a well balanced version of Rylai's that addresses the perma slow problem and poses a trade off in power for champions that want to pick it up while remaining a viable option for mages that buy it for the passive and a strong item for tankier AP champions like Singed, Mordekaiser and Rumble that place a lot of value on the survivability the health provides.
What we get is an item that went from 101% gold efficient without the passive to 92% gold efficient, and a passive that is 1/2 as effective in terms of slow % while STILL allowing champions to perma slow (cassopeia can apply the slow faster than it wears off). Hell even 100 HP was removed from the item to add insult to injury. These nerfs are a major hit for everybody other than Brand and Zyra support. The item is worse in every conceivably way and the perma slow problem has not been addressed.
**What I propose: **Add a small on-target CD to the passive to prevent people from being perma slowed, keep the slow at 20%, increase the health up to 450 and increase the cost to 3000. Lowering AP to 70 and reducing cost to 2900 in addition is a decent option as well. The item would be 93% cost efficient and require a trade-off of damage for utility. Tune champions affected as needed (i.e Morde ms buff)
If the iteration of Rylai's on the PBE right now is what you guys intend to go with, you might as well just totally delete the item from the game and then rebalance the champions affected. Brand and Zyra support definitely don't any buffs and the item is just objectively bad for every other role.