Set: Substitute Landorus

 Landorus @ Leftovers

Trait: Sand Force

EVs: 4 HP / 252 Atk / 252 Spd

Naive Nature (+Spd, -SDef)

- Substitute

- Earthquake

- Smack Down

- Hidden Power [Ice]

 

This is a fairly anti-metagame set that I'm currently using. Landorus has pretty much always been a significant sand abuser, but most tend to be either physical stat boosting sets or the Choice Scarf variant. Since Landorus can force a lot of switches with its high speed and power (Earthquake hits 195 BP in sandstorm), it often receives opportunities to set up subs. From the safety of a Substitute, Landorus can proceed to take out many of its conventional counters and either sweep or allow a teammate to do so.

franky's team ran an earlier version of this set with Stone Edge over Smack Down. Although its power drop is noticeable, Smack Down allows Landorus to get through some of its usual counters. Smack Down literally hits opponents down to the ground, meaning switch-ins like Skarmory and Bronzong can be hit with Earthquake the next turn. Even the most defensive Skarmory is cleanly 2HKOed, meaning it'll be forced to switch out or risk fainting. Entry hazards can be paired with this set to take advantage of opposing switches. Earthquake is Landorus' main method of attacking, and is powerful enough to be threatening even outside of sandstorm. HP Ice rounds out the set by taking out Gliscor and other Landorus. 

Substitute Landorus can be paired with specific teammates to make it even more threatening. It lures out and eliminates many of Excadrill's counters, meaning the two have excellent offensive synergy with each other. After their respective counters are taken out, Landorus and Excadrill can function as a potent sweeping duo on a sandstorm team.