Originally Posted by Fat mtr
Shadow Force isn't too bad on SDGhostceus, since it forces switches and helps you hit Groudon hard, who stall usually relies on to phaze out SDGhost.
I'd say it's more of a double edged sword. Opponents can set up on you between turns, and can then easily Substitute or something to block the effect (not that 1 turn of set up is really going to help many pokemon vs GhostCeus) Since Stall uses Groudon, it is not uncommon for Groudons to use Toxic- crippling you even more, because your main STAB costs two turns to perform and because you don't have Leftovers. It also isn't hard for other Ubers to Pressure stall your PP. This of course is why you run a coverage move, because just relying on Shadow Force is not a good idea. Still, it's immensely powerful, has no immediate drawbacks, and has 100% accuracy. It's high risk, high reward.