personally, with all this devourer stuff going on,

Those three champions are incredibly controversial. Personally, I consider Vladimir to be an "abomination", as well as Tyrndamere, since they both have incredibly linear game play, with very little counterplay possible. Champions like Yasou, Kalista, and Ekko have a lot more in their kits, but they have to utilize it well, and there's counterplay associated with it.

Yasou's incredibly strong, and a good counterpick to many mid lane mages, but in turn his ult is incredibly conditional mid - late game, and he tends to build to the point where he's incredibly squishy.

Kalista's a champion based upon a mechanic that ADC's should be doing naturally, just streamlining the process. I dislike the champion because of the need to counterpick her, or forcing a specific playstyle. But, she's one of the few adc's who don't rush crit chance, so I'm fine with her.

Ekko's funny. His entire kit is based around counterplay, and 90% of the time you don't get to utilize his full kit. So much of his power is located in his ult, which effectively has a 4 second delay. Even with zhonyas, landing his ult is incredibly hard.

It's all a matter of opinion. Each of those champions have a lot of power, but give others a lot of chances to play around that power. I consider those champions strong, but not overpowered by any means.

And, for what it's worth, I've played a fair amount with Ekko, a pretty high mastery, and I don't think I've played Yasou once since champion mastery hit. Same with Darius. Zyra and Kalista, I believe I'm around rank 2 on, but those were mostly the support role.

NOTHING HELPS MORE THAN SOURING THE DAY FOR ANOTHER ^^

I can help with that.