[Champion Brainstorming] A "Swarm Master" Champion (designed for "Zerging")

While Elise does have her Spiderlings, and Azir commands the Sand Soldiers, neither of them really gives off a "Zerg" feel, if you get what I mean. I'd love a Champion who can summon nearly hundreds of little ankle-biters at a time that just overrun you if you don't AOE them to death.

I don't have an idea yet for a visual design, but I have two skills that could be usable for the kit. Expect changes.

Broodling Sac
Launch an egg sac to target location, dealing magic damage on impact. This egg sac wards the location for up to 35 seconds. If an enemy approaches the egg sac, it will hatch and release Broodlings to attack any nearby enemies.

Think of this kinda like a modified version of Maokai's Saplings, but instead of exploding, it releases little ankle-biters. Got the idea from Zerg structures in Starcraft 2, which release Broodlings when they are killed.

Here's the second skill:

Infestation
(Toggle) Marks a target location and then releases 1/2/3 Broodlings every second, which move-attack toward the marked location. Costs mana every second, with the upkeep cost increasing every second.

This one would be an ultimate, and would kinda turn you into a mobile Swarm Host (again, from Starcraft 2). The catch is that the longer you have it on, the costlier it is to maintain. Don't overdo it.

So what do you guys say? Wanna help me brainstorm a "Zerging" Champion?