"Oh No . . . Not Another Skarner Rework!"
The title is probably what y'all are thinking, and unfortunately, as someone who used to rock Skarner after his first rework, I regret to inform y'all that I have yet another idea to throw out for the brackern known as the crystal vanguard.
I guess it's a good thing though that I'm only suggesting a complete overhaul to his passive and not his entire kit. The main issue with his current passive is two-fold. First, it reveals a lot of hidden information for both teams, not only by activating the spire's vision ability, but by signaling its activation on the mini-map. Second, as Skarner is dependent on securing spires, his gameplay revolves around sticking to the jungle as opposed to ganking, despite his relatively CC heavy kit.
My suggestion? Ditch the current passive for the following:
Passive - Ancient Echoes:
Story: The Brackern life crystals that were stolen by Shuriman bandits whisper to Skarner even as they change hands, begging him to reclaim them for his people.
Mechanics: Upon a takedown of an opposing champion, large or epic monster, or structure, Skarner gets a permanent buff called 'Brackern Life Crystal' that provides a bonus to mana regen, attack speed, and movement speed with diminishing returns.