76ers: Trading Tobias Harris, Matisse Thybulle, and 3 firsts for Damian Lillard. This makes them unstoppable, and likely championship favorites. Throw in a swap or 2 as well, if you want.
Mavericks: Trade 1 lottery-protected first, Tyrell Terry, Josh Green, and some European scrub for Tobias Harris. This gives Luka a legitimate second-option, rather than the 7'3 G-League player they currently have.
Blazers: They'd enter a rebuild, adding an amazing defensive wing (Thybulle), a solid 2-way wing (Green), an unknown PG (Terry), and Kristaps Porzingis, as well as a lot of draft capital. KP sucks right now but the Blazers would be banking on him returning to form.