User blog comment:Lykrast/Eleczor, the thunder's emissary/@comment-7782501-20130809024054

I like how his ultimate is so damn utility based rather than some insane nuke.

My preference aside, here are some suggestion for you:

Ult's mana cost is way too high. quite unreasonable, i would say. sure, you may argue that it can potentially stun the opponent's entire team, but it can be countered with merc threads and tenacious mastery. Irelia can just laugh her way through Static Cage if her Ionian Fervour reaches 3 stacks.

A CC in every skill is something i would find problematic. You have a skill that can chase enemies and secure kills/run away and increase the gap  (Lightning Surge), a skill that disables casters (Electric Ride), a skill that disables auto attack-reliant champions (Thunder Strike) and an AOE interrupt (Static Cage) He's just too damn versatile, with 2 of them I presume being targetting abilities (Thunder Strike and Static Charge). Evenn Nautilus or Sejuani don't have that much targetting abilities. While Eleczor may be as soft as tofu, i don't see why he has the priivilege of 2 targetting CC abilities.

Cooldown issues: with max CDR, you have a slow every 2.4 seconds a silence every 9.8? seconds, a blind every 4.8? seconds and an aoe stun every 36 seconds ( which i find pretty okay, considering Veigar's Event Horizon.)

TL:DR

reduce ult cost

Change the targetting type of the cc to something else or drop the cc

Increase cooldown of the skills.