Played lightning strike for a while this league as raider and figured i might league start it again as it felt very solid. Champion is the strongest choice in my opinion for a tri ele lightning striker right now though slayer is also a option for sure. Not much new can be said about champion at this point, permanent fortify synergy with perseverance is just too good, stacking armour and evasion and turning it into damage with a free onslaught on top.
https://pobb.in/2Sp8W9EPP41Z League startish pob, only 2 key uniques devouring diadem and perseverance. Both can be pricy at the start but are unlikely to cost more than 5 divines by day 2, unless champion gets massively more popular after the patch notes. Easily has enough damage to even do uber bosses if you really want but more built to get 4 watch stones and map.
Build can transition to a omni build later if you want really crazy damage.