His black power doesn't make a lot of sense for a 5*. The whole business of selecting just the right tiles to create the cascade or match that you want is what you do with 2*/3* Bullseye in DDQ, not in the 5* meta.
You know, I was gonna make some videos but Knull really doesn't do much of anything. He just sits there and does small chip damage every turn. Black isn't as bad as I thought but 7ap is way too expensive. Green is meh and his star power purple is a massive disappointment. The reflect damage is so minuscule and if there's only one opponent left, it does nothing. I don't understand how characters like this get released. Clearly, there's no testing going on here. Oh well, maybe the next 5* will be good. Sigh.........
How is his chip damage with Apoc or Okoye? Also how is he with Polaris?