Cassiopea ult needs some fine tuning.
I've been playing Cass lately and I feel like her ult has too much of a delay late game. If an assassin jumps on me, they will often 1 shot me before my ult goes off.
It is so delayed that when I die the ability is still available and never even when on cooldown.
Now I know the ability can be op, I mean a potential aoe stun, but with all the skirmishing going on in a team fight, you would be lucky to stun 1 or 2 targets as not everyone is facing you.
The only time found the ult reliable effective is when I waiting to surprise someone in a bush, or I've been chased.
I feel like maybe the delay on the ult should decrease as the rank goes up. Late game everyone have massive burst and fast movement speed.
Keeping up with skillshots and delayed abilities late game can be extremely difficult.