As Yagorath, you are a prime target for Ruckus to use his Hexa Fire on you, if you suspect he is going to use it soon try to preserve Harden and use it when he activates it to massively reduce the high Damage it deals.
"Smoke screen" blocks line of sight of Turrets, so they can't shoot anyone. You can mitigate Barik’s damage for 5 sec, just with one skill. Right timing and "smoke" placement is key factors.
You do not want to duel Maeve as her combo WILL one shot you. Stay away from where she likes to play unless you have an ally who can kill Maeve first with you.