What it does
Dragon Rush is a Dragon-type physical move that deals damage and has a chance to make the target flinch. A flinch costs the target its entire action for that turn — it's one of the cleaner forms of soft disruption you can attach to a damaging move.
Dragon typing means Fairy-types are completely immune (0×) and Steel-types take half damage (0.5×). Both show up regularly in Champions doubles, so you need to be aware of what you're clicking into before you commit.
Who runs it
Flapple at 73% is the move's primary user in Champions. It's Grass/Dragon, so Dragon Rush gets STAB. Flapple's Attack stat is workable, and when it outspeeds the target, the flinch chance becomes genuinely threatening — a flinched target loses its turn entirely, which in doubles can shut down a support or setup move the opponent was counting on.
Flapple's Grass/Dragon type gives it useful resistances to Water and Electric while covering Dragon-types offensively. Dragon Rush handles the physical damage side; Apple Acid covers the special side. Opponents can't just pick one defensive typing and expect to wall both angles.
How to use it
Dragon Rush targets a single Pokémon. In doubles, that means choosing carefully each turn — don't just default to the most threatening target without checking types.
Flinch only matters when Flapple moves first. Against faster targets, there's no flinch to talk about, so don't factor it into your decision-making against a speed tier that already outruns Flapple.
When you see a Fairy-type in the lead, Dragon Rush is a wasted button. Fairy immunity to Dragon is absolute — you'll deal zero damage. Steel-types are almost as bad at half damage. Both call for a different move or a pivot.
Tips & strategy
Treat the flinch as upside, not the strategy. Dragon Rush's core job is damage. When the flinch procs against a support Pokémon that was about to set up Trick Room or drop a status move, that's a swing — but build your lines around reliable damage first.
Flapple usually pairs with a support slot that keeps it safe. When protected, it gets multiple turns of output, which means multiple rolls at the flinch chance. Cumulative pressure adds up.
If the opponent's lead is Fairy-typed, save Dragon Rush for later or pivot to a different attacker entirely. One wasted turn against a Fairy in a fast-paced Champions match is a real cost.