I got it from a bunch of websites. He looks fairly legit as a potential complementary top 9 prospect and since he is late 99', he just turned 21 a few months ago (which makes him a lot more attractive than guys like Kawaguchi and Tufto who have already turned 24). Plenty of time for Steeves to develop his game even further, and he has done well at pretty much every level he's played at (PPG in the USHL in his draft year).
In terms of immediate impact, he may not be the top guy, but he is still of prospect age and he plays the kind of game you would have seen out of a guy like Trevor Moore but in a slightly larger (but still not huge) frame.
As I said, I had him as the top NCAA UFA this year but I didn't think the Leafs would be able to realistically land him. I would put him as a top 15 prospect in our system right now and he could easily rocket up the boards.
Matt Kiersted is now the top remaining guy on my board. Ben Meyers or especially Marc McLaughlin would also be a solid addition to our pool.