This may be a tad late, and it may seem like an odd idea, however I ran a very similar M-Aggron set however I ran
- Rest
- Sleep Talk
- Dragon Tail
- Rock Polish
After using Rock Polish, you're gonna outspeed anything that comes in (Provided you're running a Jolly nature) However this does come with the cost of not being able to hit fairies, as well as having a chance to use Rock Polish instead of D-Tail. I must say, being able to switch out an opponent and slowly kill them with Hazards before they can even hit you, it's pretty fantastic.
- Rest
- Sleep Talk
- Dragon Tail
- Rock Polish
After using Rock Polish, you're gonna outspeed anything that comes in (Provided you're running a Jolly nature) However this does come with the cost of not being able to hit fairies, as well as having a chance to use Rock Polish instead of D-Tail. I must say, being able to switch out an opponent and slowly kill them with Hazards before they can even hit you, it's pretty fantastic.