Debilitate Skye bursts Yagorath down quickly, especially if you have a Tank Burner built for her.

When she has her dragon, you can use your ultimate to execute him if he is below 65% health, so try to save your ultimate when u know imani also has her ultimate up.

If playing Stunning Visage, when you stun Viktor he has his head up, so try to headshot your shots when he is stunned and an extra 600 dmg after going through him are enough to kill him.

If you are playing Stunning Visage, wait for her shield to come up then stun her, which completely shuts down her shield. Then, she is an easy target to burst down.