Static shiv is way better for ADC that Luden Echo is for Mages.
Luden Echo does less damage than static shiv. The reason I say this is because static shiv can crit for about 400 magic damage with IE vs about 140 magic damage from Luden plus Rabadons.
Now you can argue, Luden echo has 100ap while static shiv has no AD. While that is true, static shiv does give 30% crit and 35% attack which when combined with 70AD from IE plus 250% crit, does a lot of damage just from stats. Static shiv also give some movespeed.
See maths at the bottom.
Whats my point? Well I know their are plenty of other things to consider such as CC movespeed armor MR and so forth. But the point I want to make is
cost 7000 gold while
cost 6000 while able to do more burst and sustain damage.
Luden echo cost 3200 while static shiv cost 2600.
[slayer-jinx-unamused]
Maths (You can skip this if you want)
= about 308 AP. Now the average mage kite has about 200-300% ap scaling in total.
Hence, 308 * 300% AP equals about 900 magic damage plus 130 magic damage from Luden passive make for a total of 1030 magic damage.
= 1030 magic damage.
Compared to
and 4 auto attacks from an ADC.
IF static shiv crits it can do 400 magic damage. Now 2 auto attacks would crit for about 425 physical damage each for a total of 850. Plus 2 auto attacks that did not crit for a total of about 340 damage.
= 1590 mix damage
= 1030 magic damage. vs
= 1590 mix damage


and
not that they arent strong just that players are always comparing the max strength which has to build up to the initial strength which is great for the part of the game you get it in but because it isnt over loaded all at one time (
) they feel like its not worth. Players also dont value the scaling of the item where you could have just lost a fight come right back to lane and win because you got scaling that tipped the fight into your favor.
both wanna say Hi to your large AOE damage with
and global ults with hard cc or execute damage as well.