Talk:Caitlyn/@comment-27004415-20180908093757/@comment-26808509-20190102163345

The only problem I see is that you still need an item to back up the rune. Traditional ADC runes (Press the Attack, Lethal Tempo, Fleet Footwork, even the modern variant of Grasp of the Undying) all scale with items on one way or the other:

-Press the Attack scales primary with attackspeed (faster proc) and secondary with attack damage (damage increase effect)

-Lethal Tempo scales primary with attack damage (to back up the gain in attackspeed) and secondary with additional attack speed (no cap)

-Fleet Footwork scales primarily with attack damage (AD scaling on the heal) and secondary with attackspeed (energized effect = more attacks, faster proc)

-Grasp of the Undying scales mostly with itself

Glacial Augment on the other hand has no scaling whatsoever if you don't buy items that have an active slowing effect. The on-target cooldown is dependant on level and is not reduced by items, the slowing effect doesn't scale either, no interactions with attackspeed, damage or anything else. The only way to make this item "scale" is buying slowing items. And for an ADC the choices are pretty limited. There would be Blade of the ruined King, which isn't exactly a good item for Cait, but it still could do. And if I'm not mistaken, it's the only ADC suited item with a slowing active. However, as I just said it's not something a Caitlyn would want to buy, especially not early on. The only situation I could see this item being worth on her is when you play against a lot of tanks.

Which also makes the slow a lot more meaningfull, because most tanks are kitable. And kiting power is pretty much the only thing that this rune gives you on an ADC. I'm not saying it's bad, but in comparison with the other runes and the scaling they promise, Glacial Augment really doesn't give you enough. Especially since it's only form of scaling is bound to a VERY situational item.

So if you don't play against a team with 3 tanks and an immobile ADC, I wouldn't recommend Glacial Augment over one of the other runes.