#0479 · Gen 4

Rotom (Heat) — Best counters

Weaknesses

ground×2.56 double weaknessrock×1.60water×1.60

	Pokémon	Fast move	Charged move	Weather	Score
1	Groudon (Primal)	groundMud Shot	groundPrecipice BladesELITE	Clear	10020.4
2	Garchomp (Mega)	groundMud Shot	groundEarthquake	Clear	8918.1
3	Landorus (Therian)	groundMud Shot	groundSandsear StormELITE	Clear	8617.6
4	Groudon	groundMud Shot	groundPrecipice BladesELITE	Clear	7615.6
5	Swampert (Mega)	groundMud Shot	groundEarthquake	Clear	7415.1
6	Excadrill	groundMud Slap	groundEarthquake	Clear	7214.8
7	Mamoswine	groundMud Slap	groundHigh Horsepower	Clear	7114.4
8	Rhyperior	groundMud Slap	groundEarthquake	Clear	6813.9
9	Garchomp	groundMud Shot	groundEarthquake	Clear	6813.9
10	Landorus (Incarnate)	groundMud Shot	groundEarth Power	Clear	6713.6
11	Krookodile	groundMud Slap	groundEarthquake	Clear	6513.3
12	Kyogre (Primal)	waterWaterfall	waterOrigin PulseELITE	Rainy	6312.9
13	Rhydon	groundMud Slap	groundEarthquake	Clear	6312.8
14	Golurk	groundMud Slap	groundEarth Power	Clear	6212.6
15	Sceptile (Mega)	bugFury Cutter	groundEarthquake	Clear · partial	6112.5
16	Donphan	groundMud Slap	groundEarthquake	Clear	6112.4
17	Mudsdale	groundMud Slap	groundEarthquake	Clear	6112.4
18	Golem	groundMud Slap	groundEarthquake	Clear	6012.2
19	Aerodactyl (Mega)	rockRock Throw	groundEarth Power	Clear · partial	5912.0
20	Kangaskhan (Mega)	groundMud Slap	groundEarthquake	Clear	5811.9

Ground hits for ×2.56 — Rotom (Heat)'s Electric/Fire typing is double-weak, so those attackers outperform their score gap.
Watch its Ghost/Electric/Fire moves — counters like Excadrill and Mamoswine take super-effective damage from them.
Clear weather boosts Ground moves ×1.2 — the best time to battle Rotom (Heat).

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