What do you think are the worst ultimates?
Obviously no
for obvious reasons. Obviously.
Personally I think
ult is pretty bad. Only saving grace is passive procs and the fact that it can disorientate. Also evolutions.
's isn't that amazing either, considering it isn't likely you'll hit every bounce. Also the whole, if you get snared you're out of an ult... 
is pretty lackluster. Often it isn't even noticeable.

proc on every attack for 12 seconds. Adds quite a bit of damage, but it's pretty boring.
comes to mind.
can be strong, but it's mostly just good for clearing minions.
is literally just a more situational
. "Let's force a squishy ADC to go into melee range, but she has bonus movespeed so it's okay."

makes him lose armour and magic resist, good work riot.