User blog comment:GreenMoriyama/Izo, the Blizzard Prince/@comment-7709681-20160327023100/@comment-3391671-20160327184415

I will say that I am not confident in this analysis, as it for sure has counter arguments, but here I go.

Starting with what he has to offer that other champions don't is his E, the integration of his passive and the influence of his ult.
 * Starting with the E, there isn't a knock-up that can be remotely activated by any current champion; there is a stun though that works better than this ability, aside from being a projectile which Glacial Blade is not. Having taken this analysis, I might head to making the travel speed much faster, although having a 0.5 second before deployment to compensate.
 * Looking at the Champion Attributes page, I've found Izo lying on the fence of a Bruiser and an almost-Carry with his mobility and potential damage output; for though, he's a fighter first. His passive, although having a medium (and maybe longer) cooldown, can be attained through connecting abilities, priming Izo to be an AA-focus if it comes to dealing damage.
 * There have been champions with large AoE's of slowing goo or ice, but Izo's ult takes it to another level (as it might become a field-focused skill than the dash focus). While the field's slow remains at a lower level, it is enough to allow Izo's team to gain a speed advantage. The fact that he can dash enemies who have "Hoarfrost" (which will have an emminent nerf to its range) means that enemies are in for it if he comes around.

While I didn't have it in mind when making the champion concept, as pointed out below, Izo has the potential to be a Jungler. The passive will need a cap for monsters, but otherwise, Izo can take care of monster camps, and when he wants to gank, he has his W and E to get in along with his passive and Q to deal the damage. His ult adds the frosting to his ability to initiate a teamfight.