I actually think taliyah is decent
She isnt a superhero or anything, but shes got a really nice low cool down on her Q, the circle passive makes it a bit better for the enemy but she does ALOT of damage if she lands all of those on you, and even if she doesnt it just clears the wave infront of her. Its pretty hard to get near her because of all her cc, which also does quite some damage.
Shes not OP, but shes got some decent strengths.