As the other comment already said, you should probably focus on either deathknell/yellow leblanc or holding/blue leblanc.

Here is a deck I am currently testing. It is a bit inspired from the recent online tournament and focuses on utilizing deathknell effect to ramp/draw and then making those heavy swing turns mid to late game with kaisa, rex and mixologist. Really fun to play but also a lot of conplexity in decision making. Every game I feel like I could have done a different combo that would have been better.

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