I didn’t get this lizard (yet?) but he seems like a solid offensive support hero especially if used in conjunction with Zulag. She got a lot of hate for not healing enough and he could help. Pair them with some hitters and these two can absorb some hits.
Also, I think he is more “slow” than slow. Almost everyone does some kind of ailment, be it D drop, fire, etc.
He’s not a game changer and if you won’t see him in top 100 D’s, but if you’re not one of the 1%’ers at the top you’d find a use for him. Unique heroes are unique heroes .