how do i use nexus blitz finisher?

I'm wondering the same thing--I don't understand what it's supposed to do

After you get the icon, you get a quest.

https://imgur.com/a/mrB3asQ

Complete the quest and the finisher is automatically equipped.

I wish riot had put a little explanation in the loot section where you 'buy' it with the tokens.

Did you get a new summoner icon? Otherwise check collection. For the Urf it is an icon for the finisher and then you do the finisher on enemies you kill, so it would make sense if they did it similar, but chances are they changed it up and it is in collection.

EDIT: if neither of those, then when you load into blitz champ select look for a new button (possibly down by the ward skin select and emote select)

i agree, equipped where? can you take a SS of how it looks? thanks!

I still have no idea what this is .. No info.[slayer-jinx-unamused]