Dodge. The rework made her nonexistant.
Edit: You all seem to be missing something. Yeah she can hit everyone with her spells. But her spells don't do damage until she has 400 stacks. Useless snake is useless. It wasn't even me playing her.
Deep Terror Nami5 votesYou're joking right? Her kit makes her excel in a corridor with plenty of targets. If you felt she was worthless there, the fault isn't on Cassiopeia.
OyddAWqJ5r4 votesShe usually can't hit more than a single target. Her W can hit everyone but deals negative damage. All she does is tickle the squishies and heal the tanks. Yes, she does so little damage that tanks with anti-poke items get healed by her.
So yeah, Cassiopeia is good at griefing if that's what you meant.
The Queen Viper2 votesYou're joking right? Her kit makes her excel in a corridor with plenty of targets. If you felt she was worthless there, the fault isn't on Cassiopeia.
Have you ever played her? Her kit is not useful before late game, which doesn't exist in ARAM. Also her passive doesn't care if you poison multiple people or just one, stacks will tick the same. Cass is rather useless in ARAM, any other mage would do a better job currently.
Deep Terror Nami2 votesOh no the "I hate Cassiopeia" circle jerk is here, watch out Riot!
The Queen Viper1 votesI do dislike the rework for sure, since IMO there was nothing really wrong with her before and nobody had any problems with or against her for like 4 years... and just around the Shurima event, RIOT decides that she's somehow problematic.
Cerbearus4 votesNot worthless, you just need 400 stacks before you will do meaningful damage.
OyddAWqJ5r3 votesExactly, so if you can make the game go on for 50 minutes you win! :D
BeatzBoyFTW3 votesCasseiopeia works really well in Aram more than SR. Annoying slow poisons can really bring the frustration to enemy team, even if it doesn't do a lot of damage. Usually 
& 
would do the trick.
OyddAWqJ5r3 votesLiandry's probably does more damage than her full rotation.
The Queen Viper1 votesAny poke or high ranged camp would do a better job in ARAM than Cass. She is rather useless there.
ScurvyNave3 votesIronically I find game modes like hexakill and Aram to be the areas where reworked Cassieopia is actually useful. Its really easy to get your stacks on an enemy team all clumped together and in that narrow of an area your Ult is actually useful.
The Queen Viper1 votesCurrently it doesn't matter at all if you hit 1 or 5 person with her Q, stacks will tick the same. She's not really useful outside of Summoners Rift unfortunately.
chumbler2 votesCurrently it doesn't matter at all if you hit 1 or 5 person with her Q, stacks will tick the same. She's not really useful outside of Summoners Rift unfortunately.
She's not useful there, either.
yellowbricks3 votesAs much as I hate new Cass, I would embrace the moment to inflict her shitty rework on everyone and make them see what riot has done to her.
Kat Head2 votesMy last 5 aram games as cassi on LAN.
Her damage is INSANE !
Shurle1 votesSpeak of the devil I have a Cassiopeia on my team (ARAM) and I'm Azir, and I just came from a thread about Azir's bugs.