A sand double build where Tyranitar's Smooth Rock extends Sandstorm duration, letting Excadrill and Houndstone benefit from the Sand Rush speed boost. Corviknight's Tailwind keeps speed control going even after the sand ends. With so many Steel/Ground types that can shrug off Sandstorm chip damage, the team can operate for a long time without self-inflicted attrition.
Tyranitar (Smooth Rock, Sand Stream): Rock Slide / Knock Off / Low Kick / Protect. Smooth Rock extends Sandstorm to 8 turns, keeping the whole team's Speed boost active longer.
Excadrill (Focus Sash, Sand Rush): Iron Head / Earthquake / Rock Slide / Protect. Sand Rush doubles its Speed in the sand, looking for a surprise first strike.
Houndstone (Sitrus Berry, Sand Rush): Last Respects / Ally Switch / Will-O-Wisp / Protect. Also benefits from Sand Rush's speed boost while neutralizing physical attackers with Will-O-Wisp.
Corviknight (Leftovers, Mirror Armor): Brave Bird / Bulk Up / Tailwind / Roost. Mirror Armor reflects stat drops back at the opponent while Tailwind carries on speed control once the sand ends.
Kommo-o (Haban Berry, Overcoat): Clanging Scales / Aura Sphere / Vacuum Wave / Protect. Overcoat grants immunity to sound moves, letting it spam Clanging Scales safely.
Mega Venusaur (Chlorophyll): Giga Drain / Sludge Wave / Earth Power / Protect. A bulky firepower source that offsets Sandstorm's residual damage with recovery moves.