#0492 · Gen 4 · Mythical

Shaymin (Land) — Best counters

Weaknesses

flying×1.60poison×1.60bug×1.60fire×1.60ice×1.60

	Pokémon	Fast move	Charged move	Weather	Score
1	Blaziken (Mega)	fireFire Spin	fireBlast BurnELITE	Clear	10013.2
2	Charizard (Mega Y)	fireFire Spin	fireBlast BurnELITE	Clear	9712.8
3	Rayquaza (Mega)	flyingAir Slash	flyingHurricaneELITE	Windy	9312.2
4	Blacephalon	fireIncinerate	fireOverheat	Clear	8911.7
5	Salamence (Mega)	fireFire Fang	flyingFly	Windy · partial	8811.5
6	Eternatus	poisonPoison Jab	dragonDynamax CannonELITE	Windy · partial	8711.5
7	Pidgeot (Mega)	flyingGustELITE	flyingBrave Bird	Windy	8711.4
8	Reshiram	fireFire Fang	fireFusion FlareELITE	Clear	8511.2
9	Beedrill (Mega)	poisonPoison Jab	poisonSludge Bomb	Overcast	8511.2
10	Kyurem (White)	iceIce Fang	fireFusion Flare	Clear · partial	8411.1
11	Charizard (Mega X)	fireFire Spin	fireBlast BurnELITE	Clear	8310.9
12	Gengar (Mega)	ghostLickELITE	poisonSludge Bomb	Overcast · partial	8210.8
13	Heracross (Mega)	bugStruggle Bug	bugMegahorn	Rainy	8210.8
14	Pheromosa	bugBug Bite	bugBug Buzz	Rainy	8110.6
15	Eternatus (Eternamax)	poisonPoison Jab	dragonDynamax CannonELITE	Windy · partial	7910.4
16	Salamence	fireFire Fang	flyingFly	Windy · partial	7810.3
17	Chandelure	fireFire Spin	fireOverheat	Clear	7810.3
18	Houndoom (Mega)	fireFire Fang	fireFire Blast	Clear	7810.3
19	Enamorus (Incarnate)	fairyFairy Wind	flyingFly	Windy · partial	7710.1
20	Tornadus (Therian)	flyingGust	flyingBleakwind StormELITE	Windy	7610.1

Shaymin (Land) is weak to Flying (×1.6), Poison (×1.6), Bug (×1.6), Fire (×1.6), Ice (×1.6).
Watch its Normal/Psychic/Grass moves — counters like Blaziken (Mega) and Eternatus take super-effective damage from them.
Clear weather boosts Fire moves ×1.2 — the best time to battle Shaymin (Land).

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