#0709 · Gen 6

Trevenant — Best counters

Weaknesses

flying×1.60ghost×1.60fire×1.60ice×1.60dark×1.60

	Pokémon	Fast move	Charged move	Weather	Score
1	Blaziken (Mega)	fireFire Spin	fireBlast BurnELITE	Clear	10013.2
2	Gengar (Mega)	ghostLickELITE	ghostShadow Ball	Fog	9813.0
3	Charizard (Mega Y)	fireFire Spin	fireBlast BurnELITE	Clear	9712.8
4	Rayquaza (Mega)	flyingAir Slash	flyingHurricaneELITE	Windy	9312.2
5	Absol (Mega)	darkSnarl	darkBrutal SwingELITE	Fog	9011.8
6	Blacephalon	fireIncinerate	fireOverheat	Clear	8911.7
7	Salamence (Mega)	fireFire Fang	flyingFly	Windy · partial	8811.5
8	Pidgeot (Mega)	flyingGustELITE	flyingBrave Bird	Windy	8711.4
9	Banette (Mega)	ghostHex	ghostShadow Ball	Fog	8611.3
10	Reshiram	fireFire Fang	fireFusion FlareELITE	Clear	8511.2
11	Kyurem (White)	iceIce Fang	fireFusion Flare	Clear · partial	8411.1
12	Charizard (Mega X)	fireFire Spin	fireBlast BurnELITE	Clear	8310.9
13	Tyranitar (Mega)	darkBite	darkBrutal Swing	Fog	8310.9
14	Houndoom (Mega)	darkSnarl	fireFire Blast	Clear · partial	8010.5
15	Alakazam (Mega)	psychicPsycho Cut	ghostShadow Ball	Fog · partial	7910.4
16	Yveltal	darkSnarl	flyingOblivion WingELITE	Windy · partial	7810.3
17	Salamence	fireFire Fang	flyingFly	Windy · partial	7810.3
18	Chandelure	fireFire Spin	ghostShadow Ball	Fog · partial	7810.3
19	Enamorus (Incarnate)	ghostAstonish	flyingFly	Windy · partial	7710.2
20	Honchkrow	darkSnarl	flyingBrave Bird	Windy · partial	7710.2

Trevenant is weak to Flying (×1.6), Ghost (×1.6), Fire (×1.6), Ice (×1.6), Dark (×1.6).
Watch its Ghost/Dark/Grass moves — counters like Gengar (Mega) and Blacephalon take super-effective damage from them.
Clear weather boosts Fire moves ×1.2 — the best time to battle Trevenant.

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