Tyranitar

Sand Stream counters opposing Rain and Sun by overwriting enemy weather on entry. A dedicated anti-weather tool that removes the speed boosts and damage multipliers opposing weather teams rely on. Rock Slide provides spread Rock damage and flinch. Low Kick handles Steel targets by weight scaling. Knock Off strips held items. Passho Berry absorbs one Water hit. Protection against Rain teams' Surf and Wave Crash that would punish Tyranitar's Water weakness. Adamant maxed HP and Attack creates a durable physical attacker. The anti-weather role is deliberate disruption. Bringing Tyranitar in removes the environmental advantage opposing teams need.