Yeah sejuani is another disgusting one right now. She can solo carry as well with enough of a lead, which usually is not hard for her to obtain. I've played multiple games against sejuani junglers now. I get fed as adc a few kills up like 40 cs over my opposing adc. Doesn't matter cause low mmr players don't know how to peel so here comes the unkillable sejuani chasing me down and murdering me with no one doing anything about it for 10 secs at which point team fight is usually over.
Not to mention tank jungles which can just lock people down and zone are extremely hard to fight for objective control. Shyvana has buffs for doing dragon even, so chances are your team is not getting a dragon unless you just manage to get lucky with timing or kill botlane early or catch shyvana out in your jungle. And even those things don't guarantee a dragon against shyvana.