Vivillon/Blastoise Dual Mode Trick Room

Synergy

Vivillon leads with Choice Scarf Sleep Powder to incapacitate one opponent while Mega Blastoise Fake Outs the other, then sets up Shell Smash freely. The team runs a second Trick Room mode anchored by Kangaskhan, Forretress, and Torkoal, making it extremely difficult for opponents to cover both win conditions in a closed team sheet best-of-one environment. Forretress also blocks priority moves that would otherwise disrupt Vivillon and Blastoise.

Win Conditions

Vivillon puts an opponent to sleep with the near-100% accurate Compound Eyes Sleep Powder while Blastoise Fake Outs the other, then Shell Smash goes up on turn two and Water Spout sweeps. Secondary win condition is Trick Room with Kangaskhan and Torkoal.

Lead Options

Vivillon + Blastoise-Mega, Kangaskhan + Forretress

Threats

Bulky Grass types immune to Sleep Powder (Mega Venusaur, Sinistcha, Whimsicott). Lum Berry holders that wake immediately. Priority Taunt from Whimsicott or Sableye. Gale Wings Talonflame with priority block support. Focus Sash Jolly Serene Grace users with Power Whip.