[Meta thread] Iron's PokeRole Adventure: The Skull Ruins

[Dragonstrike]

Wing Attack is not lethal, though... Unless one keeps spamming it on the opponent after he dropped to 0 HP. It's also super effective here.

That's the point of the warning.  The wording in the original post is 'until it dies.'  Implying that Rufflet has been ordered to not stop attacking until it's killed its opponent (which happens after fainting it since we don't have any lethal attacks yet, disregarding Metronome).

On top of that, fainting also completely reverts Mega Evolution's effects*, so...it wouldn't take long to kill the Pinsir after it faints if that order goes through and is uninterrupted...

*Note: If a mega pokemon faints in the games and a revive is used on it, it's revived in its normal form and mega evolution cannot be triggered again since it's been used in the battle already