Still, youd rather keep control of what you took than use it for other purposes, especially since these arent steal effects that return the property at the end of the turn
Until Next Time, Unleash the Force of the Maze
Note that if it was forked, you cannot win with it, as that won't count as "casting," but something that casts it for free from a non-hand source will count the first time, so something like Golos, Tireless Pilgrim can count as the first time you cast it, and net you seven life and stack it seven down
That's a one-drop that can cast a key three-drop Commander on turn 2 and it cannot be Counterspelled
You can use mind controls as part of a steal-and-sac theme, where you take an opponents creature and feed it to a sacrifice effect