You only use Destiny Bond when you're going to die so anything that happens after that is pretty much irrelevant. If you use Destiny Bond and don't die you wasted a turn, and even if your logic made sense in that department what is the point of attacking something that's going to die to Destiny Bond anyway?
And even if there was a good reason to use a non-priority move Gunk Shot is a pretty bad choice, Knock Off or Thunderbolt are better for the secondary effect and coverage respectively.
Knock off is a great move... but the coverage with Phantom Force is not great. Can't touch darks. And my plan is if I disabled their set up move, they are forced to attack, and I could make them attack me to get their attack. And if they switch? I just phantom force the turn they switch, and repeat.
Gunk shot is less reliable than my set is, plus a lot of things that would switch in to mega Banette would have protect, making shadow force pretty useless. You must not be in very high ranks, because anyone with half a brain knows not to attack a banette. If Banette can't do much damage to the opposing pokemon, you're basically set up bait.
Phantom force goes through protect you know... And Disable stops a lot of set up pokemon to normally. And really... Thunderbolt may give you better coverage, but why waste that massive attack? I will admit, the acc of Gunk shot is less then desirable.
ANd like I said, I have a Rotom using Will-o-wisp already. I don't need 2 pokemon to burn.
Just wanted to point out that Phantom Force ignores protecting moves. Also Gunk Shot got accuracy boost and is as accurate as Fire Blast iirc...
E:OK, checked and Fire Blast is 85 while Gunk Shot is 80 accuracy.
Oh yeah, forgot about Phantom force hitting through protect. I also wasn't aware that gunk shot had a boost to accuracy. Did its power get lowered like the other moves?
Anyways, if you're gonna use this set, you better have a mega lucario counter, cuz that thing is gonna spam swords dance/nasty plot if you don't switch out. It also has bullet punch, so it can outspeed banette's +1 destiny bond.
Ah someone pointed out the phantom force going through Protect. And Gunk SHot is Still 120 power
As for a mega Lucario COunter, I do have Rotom Heat with Will-o wisp and over heat. That should destroy Mega Lucario
EDIT:
Just saying: The effect of Destiny Bond lingers until your next attack. You can essentially make Destiny Bond last two turns by using Destiny Bond one turn and a non-priority attacking move the next. This is a great way to keep pressure on your opponent because even if they waste the turn you used Destiny Bond setting up, they still can't attack you the turn after unless they too want to die. This is why, as you mentioned, that Knock Off is such a great move on M-B, as this scenario is capable of forcing a lot of switches which allows M-B to cripple opponent's that think they're smart by staying in (and also those that switch in).
Exactly., That 2 turn threat of Destiny bond can really keep the pressure on the foe. However, you bring up a good point on knock off with that idea. with them switching so often, you can knock off so many items.
However, Ghost/Dark doesn't give you great coverage...