Hello all. Recently i got some new champs and I feel the need to redesign my clan boss team to allow me to get grandmaster brutal with less than 3 keys (my current clan hasn't unlocked nightmare yet) I was thinking with what I have is 

Kael (possibly replaced with Aeshma)

Venomage (extra poison/reliable att/def down)

Aox (healing, making SURE that att stays down)

Lilitu (Reviver, shield, buffs)

and  Kunuichi (ally protection/block damage)

would this work for a poison focused CB team? And what would work BETTER if this is actually bad? I'm sorry if this is a dumb question, there are a lot of characters and a big learning curve to get everything straight for stuff like this.

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Here is everything I have worth showing if something else works better. Thanks in advance for the help!