#1008 · Gen 9 · Legendary

Miraidon — Best counters

Weaknesses

ground×1.60ice×1.60dragon×1.60fairy×1.60

	Pokémon	Fast move	Charged move	Weather	Score
1	Eternatus	dragonDragon Tail	dragonDynamax CannonELITE	Windy	10014.6
2	Rayquaza (Mega)	dragonDragon Tail	dragonBreaking SwipeELITE	Windy	9513.9
3	Eternatus (Eternamax)	dragonDragon Tail	dragonDynamax CannonELITE	Windy	9013.2
4	Groudon (Primal)	groundMud Shot	groundPrecipice BladesELITE	Clear	8712.7
5	Garchomp (Mega)	dragonDragon Tail	groundEarthquake	Clear · partial	8712.7
6	Salamence (Mega)	dragonDragon Tail	dragonDraco Meteor	Windy	8212.0
7	Kyurem (Black)	dragonDragon Tail	iceBlizzard	Snow · partial	7911.6
8	Gardevoir (Mega)	fairyCharm	fairyDazzling Gleam	Overcast	7811.4
9	Palkia (Origin)	dragonDragon Tail	dragonDraco Meteor	Windy	7611.0
10	Landorus (Therian)	groundMud Shot	groundSandsear StormELITE	Clear	7511.0
11	Palkia	dragonDragon Tail	dragonDraco Meteor	Windy	7410.8
12	Kyurem (White)	iceIce Fang	iceBlizzard	Snow	7410.8
13	Salamence	dragonDragon Tail	dragonDraco Meteor	Windy	7310.7
14	Latios (Mega)	dragonDragon Breath	dragonDragon Claw	Windy	7310.6
15	Rayquaza	dragonDragon Tail	dragonBreaking SwipeELITE	Windy	7210.5
16	Haxorus	dragonDragon Tail	dragonBreaking SwipeELITE	Windy	7210.5
17	Dragonite	dragonDragon Tail	dragonDraco MeteorELITE	Windy	7010.2
18	Latias (Mega)	dragonDragon Breath	dragonOutrage	Windy	689.9
19	Dialga	dragonDragon Breath	dragonDraco Meteor	Windy	689.9
20	Reshiram	dragonDragon Breath	dragonDraco Meteor	Windy	689.9

Miraidon is weak to Ground (×1.6), Ice (×1.6), Dragon (×1.6), Fairy (×1.6).
Watch its Electric/Dragon/Normal moves — counters like Eternatus and Rayquaza (Mega) take super-effective damage from them.
Windy weather boosts Dragon moves ×1.2 — the best time to battle Miraidon.

Rankings are estimated cycle DPS (attack stat × move damage ÷ cycle time, with STAB and type effectiveness). Not a full battle simulation.