Pokemon Scarlet and Violet Poison Hydreigon 7-star Tera Raid guide: Counters, weaknesses, and more

The latest Pokemon Scarlet and Violet Poison Hydreigon 7-star Tera Raid is now live, giving players a chance to add another strong creature in their teams. This Gen V pseudo-legendary is no easy opponent, demanding careful planning and the right Pokemon to counter it. However, once beaten players will be rewarded with valuable items and of course, the opportunity to catch this Mightiest Mark Hydreigon.

In this article, we will break down everything you need to know about the Poison Hydreigon 7-Star Tera Raid, including event details, Hydreigon’s moveset, weaknesses, rewards, and the best counters.

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Pokemon Scarlet and Violet Poison Hydreigon 7-star Tera Raid: Event schedule and details

The Mighty Hydreigon event will be available during two weekends:

• November 7, 2025 - November 9, 2025
• November 14, 2025 - November 16, 2025

During this limited-time event, Poison Tera Type Hydreigon will appear in 7-Star Raids across Paldea. Just like previous 7-Star raids, players can only capture one Hydreigon per save file, and the one caught will carry the exclusive Mightiest Mark.

Also read: How to get Shiny Miraidon and Koraidon in Pokemon Scarlet and Violet (all countries and where to get them)

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Pokemon Scarlet and Violet Poison Hydreigon 7-star Tera Raid: Moveset, ability, and raid behavior

Attributes

• Tera type: Poison
• Ability: Levitate
• IVs: 31 in each stat
• Nature: Modest (+ Sp. Attack, - Attack)
• Moves: Tera Blast (Poison-type), Dark Pulse, Dragon Pulse, Earth Power
• Additional Moves: Snarl, Nasty Plot, Dragon Dance
• Mark: Mightiest Mark

Raid behavior

• Start of raid: Hydreigon uses Snarl
• 85% Time and HP Remaining: Shield Activation
• 82% Time Remaining: Hydreigon Stats & Status Reset
• 70% Time Remaining: Hydreigon uses Nasty Plot
• 55% Time Remaining: Hydreigon uses Nasty Plot
• 55% HP Remaining: Player Stats & Status Reset
• 40% HP Remaining: Hydreigon uses Dragon Dance

Also read: 5 best Doubles teams in Pokemon Scarlet and Violet VGC Regulation J

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Pokemon Scarlet and Violet Poison Hydreigon 7-star Tera Raid guide: Weaknesses and tips

Hydreigon as seen in the anime (Image via The Pokemon Company)

Although Hydreigon is naturally a Dark/Dragon-type, its Poison Tera Type changes its weaknesses and resistances.

Super-effective types:

• Ground
• Psychic

Keep in mind, Hydreigon’s Levitate makes it immune to Ground-type moves, neutralizing one of its weaknesses. Therefore, Psychic-type moves are your best bet for dealing consistent damage.

Also read: Pokemon: Toughest random Trainer battles in each region

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Best counters to Poison Hydreigon 7-star Tera Raid in Pokemon Scarlet and Violet

1) Malamar

• Tera type: Psychic
• Ability: Contrary
• Held Item: Shell Bell
• Nature: Modest
• EV Spread: 252 HP / 4 Sp. Attack / 252 Sp. Def
• Moveset: Skill Swap, Calm Mind, Rest, Stored Power

Start the fight by using Skill Swap to give Hydreigon the Contrary ability. This ability swap inverses the buffs of Nasty Plot and Dragon Dance, causing Hydreigon’s stats to drop instead of rise. After that, spam Calm Mind to max out your own Sp. Attack and Sp. Defense which will also power up Stored Power. Use Rest whenever you need to recover.

2) Excadrill

• Tera type: Ground
• Ability: Mold Breaker
• Held Item: Shell Bell
• Nature: Adamant
• EV Spread: 252 Sp. Def / 4 HP / 252 Atk
• Moveset: Earthquake, Swords Dance, Mud-Slap, Protect

Excadrill’s Mold Breaker lets it ignore Levitate, allowing its Earthquake to hit despite Hydreigon’s immunity. Use Protect strategically when Hydreigon resets your stats. Set up with Swords Dance as soon as possible, then go all-in with Earthquake for supper-effective heavy damage.

Also read: Toughest Gym battles in each Pokemon mainline game

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All possible rewards from Pokemon Scarlet and Violet Poison Hydreigon 7-star Tera Raids

Winning the raid grants experience items, TMs, crafting materials, and other useful collectibles.

Guaranteed rewards:

• Exp. Candy L x6
• Exp. Candy XL x4
• Calcium x5
• Poison Tera Shard x40 (+20 for host)
• TM140 x1 (use once)
• Ability Patch x1 (use once)

Possible random drops:

• Exp. Candy L x3 (13%)
• Exp. Candy L x5 (16%)
• Rare Candy x2 (8%)
• Exp. Candy XL x2 (5%)
• Calcium x5 (8%)
• Star Piece x2 (8%)
• Comet Shard x1 (2%)
• Nugget x2 (5%)
• Modest Mint x1 (3%)
• PP Up x1 (5%)
• Bottle Cap x1 (4%)
• Poison Tera Shard x20 (5%)
• Ability Capsule x1 (2%)
• Ability Patch x1 (1%)
• Herba Mystica (Sweet, Salty, Sour, Bitter, Spicy) x1 (each 3%)

Also read: Pokemon Scarlet and Violet: All Nintendo Switch 2 features

Edited by Aashish Victor