If you are playing Katarina and you throw a Bouncing Blade when Luden's is at 80 stacks and you walk around to get it to 100 stacks before the last dagger bounces, it will apply Luden's Echo. I was watching a stream yesterday and found it pretty hilarious as the enemy laner was just standing near turret with 200 health and the last dagger bounced to her and proc'd Ludens then she died and was like wtf was that. Rofl
Sire Hippington5 votessure, as soon as you deal spelldamage and have 100 stacks, it procs. same for dots, if you apply a dot and reach 100 befor the last tick, it will trigger ludens.
Meep Man2 votes[{quoted}](name=Don Pavoni,realm=EUW,application-id=3ErqAdtq,discussion-id=t6JqU0FH,comment-id=0000,timestamp=2015-03-17T14:25:23.081+0000)
sure, as soon as you deal spelldamage and have 100 stacks, it procs. same for dots, if you apply a dot and reach 100 befor the last tick, it will trigger ludens.
Hurry what's the longest damage over time in the game?
EDIT: 
R can now do serious damage if you move and spam spells while a target is fleeing from you. Boom, Morde OP.
The5lacker2 votesWelcome to every ability ever. Stacks are gained on spell cast and expended on spell hit. Any projectile, delayed ability, DoT etc. will trigger Luden's if you cast it at 80 or more stacks.
