Ziggs kit is overloaded beyond acceptable values atm.

He can siege... Well I suppose we needed a mage that can actually siege, but hows about they not be able to zone and anti-siege too eh?

In all seriousness, Ziggs being able to push turrets was an appropriate (for the character) and needed change. I think we all know how Ziggs pushes, but let me walk you through it just incase.

Ziggs has two primary pushing aspects, his passive and his W.

Short Fuse passive. Ziggs' basic attacks periodically deal 20 - 160 (based on level) (+ 30 / 40 / 50% AP) bonus magic damage,「 doubled 」against enemy structures. This has a static cooldown of 12 seconds, but is reduced by 4/5/6 seconds when he casts an ability. (at levels 1,7,13 respectively.)

Satchel Charge. ACTIVE: Ziggs flings an explosive charge to the target area. Satchel Charge demolishes turrets below a health threshold 25 / 27.5 / 30 / 32.5 / 35%

Since turrets have only 3300 health, that means he can blow them up with a satchel charge at 825 / 908.5 / 990 / 1,073 / 1,155 Now this may not seem too overpowered, and I would tend to agree, but his extreme power comes from his passive. Let's say our fuzzy, and slightly tinged squirrel has 400 AP, Lich bane, and is level 14. This means his passive will be doing 114 + 50% ap (200){doubled against turrets}, this along with lich bane's 69 + 50% ap(200) will do a grand total of 897 damage in one shot. Best part about this is, due to the spam of his Q he'll be able to do it close to 3 seconds later. At this point the turret will be down to roughly 1,237 health. This means it's almost within his satchel charges threshold. But this isn't what I think his problem is, although we're almost there. His problem is his ability to defend from siege. That spam on the Bouncing bomb and the use of his satchel and minefield as well, is far too much for the poor little minions to wade through.

So what I propose is to weaken his lane pushing power by a sharp amount. By all means, let him shred turrets as much as he likes, but make him have to work his way up there. Bouncing bomb now applies 50% damage against minions. Throw this up on the PBE and let's see what happens. Due to it's remarkably low mana cost and low cooldown, it can be spammed at all levels, and remember that his passive applies to minions and champion as well.

I like seeing Ziggs again, but right now he's just too powerful to justify the spam, wave clear, siege potential, and teamfight disruption.

Just my 2 cents on the matter, and I feel like this will target his heavily overloaded kit.