U-Throw
Smash Lord
While this is an excellent idea, I'm not completely on board with it. However, it's completely my own fault.New idea for FS, Mewtwo goes mega and then uses Psystrike. Basically, once you perform the FS, Mewtwo will create a circle-shaped shock wave and if enemies are hit by it, then they will vanish and reappear at the center of the stage while being suspended in the air. Mewtwo will teleport and reappear as one of its two Megas and unleash a giant sphere of energy that traps opponents while damaging them which is finished by an explosion. Mewtwo will then change back to its original form.
The Mega evolution Mewtwo will use is both random or manual if you hold the X or Y button right after activating the Final Smash.
Edit: Visual example
View attachment 40398
Mewtwo would be either MX or MY but that portion is only aesthetic.
For whatever reason, my brain does not like the idea of Mewtwo Mega Evolving and then attacking. Normally, I'm willing to compromise on something like this, but I just cannot seem to bring myself to compromise. I only like the idea of Mewtwo just outright attacking.
However, while I don't like it, that does not mean that it's a bad idea. I actually think that this is the possible best idea for Mewtwo's Final Smash. It's the perfect compromise between the two sides of this argument simply because nobody is losing anything! Mega Mewtwo X fans get his Mega Mewtwo X, Mega Mewtwo Y fans get Mega Mewtwo Y and Attack fans get an attack. It's genius.
So just disregard what I think, and take what I'm saying: This is probably the best idea for Mewtwo's Final Smash that's been suggested on this thread.