magic:
Something isn't working. They need better shooting from the wing and better rim protection. Markkanen and Kessler give them all that and more, and it seemed Kessler might added C&S to his game.
While it's hard to Wagner if things keep going the way they are going when the trade deadline is approaching something massive must change.
Jazz:
They've been waiting for a young Superstar. Whether Ace is going to work out or not Wagner is a bonafide star that can become a top 10 player in the League.
They also get a good young SG to complete their young core.
Warriors:
Everybody loves Al Horford but he will have a hard time being healthy and good in the long run and/or late in games. WCJ is a good rebounder decent defender and can space the floor.