Ohmwrecker on ADCs is fun
When you're an ADC against a team full of AD champs that are doing well, you're probably gonna want a defensive item. There are better items stat-wise, but the passive and active on this item are sooooooo great. 20% MS basically all the time is great for getting back into lane, getting out of a team fight because you're in soloQ and no one will peel for you, as well as just making enemy turrets useless. It's great for pushing, teams will back off immediately because they forgot it was an item. It turns poking the enemy team that's under turret waveclearing into an ace, turret or two, and an inhib lategame. I actually won a game for my team using the active against the Nexus Turrets. Taking out both of them for 2.5 seconds and resetting the scaling damage on the lasers is pretty pivotal in a teamfight.
I honestly just like it for the movement speed. Gotta go fast. Should be noted I was using it on Lucian, who is already pretty mobile. Assassin jumps you? W for slow, auto for ms boost, E away, run, hopefully your team noticed what's up. It's pretty nice.
http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2068361601/222394459?tab=overview http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2068363159/222394459?tab=overview