Back story:
This team is way better than it deserves to be. There was nearly no thought put into this team, and a majority of it working well is probably just coincidence. That said, the team was made after doing a Random Battle and seeing an interesting set on one of the pokemon, which will be listed below. Without really trying, I managed to have the Fire/Water/Grass core, and a spin blocker, plus managing to cover my weaknesses with the only effort put into making this team.
At a glance:
Main Pokemon:
The moveset that made me want to build a team around it was a Trevenant with Substitute, Curse, Horn Leech, and Calm Mind. I made a slight alteration to it and put it on this team. Trevenant is an amazing wall, with Harvest and access to Lum Berry or Sitrus Berry. Giving this Will-o-wisp, Trevenant can start to tank everything. Using Substitute, Trevenant is block any status effect stallers, stopping Toxic. Curse is a wall breaker, no questions asked, and with the Sitrus Harvest, recovery isn't very scary.
Protecting the forest:
The first weaknesses that come to mind for Trevenant are Fire, Flying, Ice, and Dark. Mega Blastoise covers all of these types with relative ease. Ghost types weren't thought about when making this decision, but it appears from my little experience that offensive ghosts arent common in UU anyway. If Ghosts are more common than I'm seeing, then I can replace Water Spout with Dark Pulse. That said, the moveset I chose was Blametruth's Mega Blastoise set.
Filling the tank:
At this point, I decided that Mega Blastoise should be my main offensive Pokemon, as it can cover Trevenant, whom is a defensive Pokemon. Blastoise's main weaknesses are Electric and Grass hits, obviously, so I chose Entei to deal with Grass types and Donphan for Electrics.
Entei is a very fun Pokemon, that can hit like a truck in UU. Entei has gotten so much better now as well with the addition of Sacred Fire to his moveset. While weaker than Flare Blitz, Sacred Fire has a high burn chance and doesn't cause recoil, allowing Entei to survive longer. Due to the 115 base attack, I decided to go with a choice banded set, which can punch wholes into a lot of opponents.
Donphan was chosen because, looking at my team at this point, I realized I needed a spinner for Entei, someone to set up rocks, cause rocks, and someone that can take hits. I went with a fully defensive Donphan. One of my biggest threats, which will be listed down below, will not always be OHKO'd with Adamant Donphan with max attack after Rocks, so defensive feels like the better way to go.
Rounding out the edges:
At this point, I felt like I had a lot of power and just needed to cripple the opponent's speed. Thus steps in the last two Pokemon, one for land and one for air.
Galvantula allows me to set up sticky web, which will allow Mega Blastoise to outspeed (I'm assuming) everything, and allows Trevenant to outspeed a lot of Pokemon to set up a Substitute. I went with a Focus Sash lead set, using Thunder and Bug Buzz for STAB and Volt Switch to switch out.
Jirachi cripples the speedy things that laugh at Sticky Web: Malamar, levitators, and flying Pokemon. How does it do that? Thunder Wave. Crippling anything that cant be caught in the sticky web, as well as paraflinching everything. Jirachi can cripple one of my two threats, allowing Blastoise to revenge kill it.
The movesets:
Shell Smash (Blastoise) @ Blastoisinite
Ability: Rain Dish
Shiny: Yes
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature
- Aura Sphere
- Ice Beam
- Water Spout
- Water Pulse
Tail Glow (Donphan) @ Leftovers
Ability: Sturdy
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Rapid Spin
- Stealth Rock
- Earthquake
- Ice Shard
Defensive (Entei) @ Choice Band
Ability: Pressure
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature
- Sacred Fire
- Extreme Speed
- Stone Edge
- Iron Head
Ron Weasly (Galvantula) @ Focus Sash
Ability: Compound Eyes
EVs: 252 SAtk / 4 SDef / 252 Spd
Timid Nature
- Sticky Web
- Thunder
- Volt Switch
- Bug Buzz
Dream Breaker (Jirachi) @ Leftovers
Ability: Serene Grace
Shiny: Yes
EVs: 224 HP / 252 Atk / 32 Spd
Adamant Nature
- Iron Head
- Thunder Wave
- Zen Headbutt
- Fire Punch
Ghostly Tree (Trevenant) @ Sitrus Berry
Ability: Harvest
Shiny: Yes
EVs: 252 HP / 4 Atk / 252 SDef
Careful Nature
- Curse
- Horn Leech
- Substitute
- Will-O-Wisp
Threats:
Exploud hits like a truck. Choice Specs Boomburst just hurts everything, and I dont think I have anything that can switch in on it. Even my special wall, Trevenant, takes 64-76% from Boomburst, which actually does more than Ice Beam to Trevenant (scurry!). Exploud can be revenge killed with Mega Blastoise, but by then the damage may have already been done.
Milotic walls me to hell. Trevenant can't do too much to it, due to recovering off Curse damage, and Horn Leech not being able to give a high enough damage output. A potential fix to this is toxic on Trevenant, over Will-O-Wisp.
Noivern, due to Infiltrator, hits through Substitute. Specs Noivern, like Exploud, hits like a truck. Noivern will not always be OHKO'd by Adamant max attack Ice Shard after stealth rocks. An option is switching Fire Punch with Ice Punch on Jirachi, which will always OHKO Noivern. A back up strategy is 2 Ice Shards from Donphan, if it has sturdy, or 1 Ice Shard and 1 ESpeed from Entei.
Caught in the act:
This one is a pretty quick domination with Trevenant
This one was a really close game that I could have won, had I locked myself into ESpeed over Stone Edge.
This one shows how Curse can wall break.
Importable:
This team is way better than it deserves to be. There was nearly no thought put into this team, and a majority of it working well is probably just coincidence. That said, the team was made after doing a Random Battle and seeing an interesting set on one of the pokemon, which will be listed below. Without really trying, I managed to have the Fire/Water/Grass core, and a spin blocker, plus managing to cover my weaknesses with the only effort put into making this team.
At a glance:






Main Pokemon:

The moveset that made me want to build a team around it was a Trevenant with Substitute, Curse, Horn Leech, and Calm Mind. I made a slight alteration to it and put it on this team. Trevenant is an amazing wall, with Harvest and access to Lum Berry or Sitrus Berry. Giving this Will-o-wisp, Trevenant can start to tank everything. Using Substitute, Trevenant is block any status effect stallers, stopping Toxic. Curse is a wall breaker, no questions asked, and with the Sitrus Harvest, recovery isn't very scary.
Protecting the forest:

The first weaknesses that come to mind for Trevenant are Fire, Flying, Ice, and Dark. Mega Blastoise covers all of these types with relative ease. Ghost types weren't thought about when making this decision, but it appears from my little experience that offensive ghosts arent common in UU anyway. If Ghosts are more common than I'm seeing, then I can replace Water Spout with Dark Pulse. That said, the moveset I chose was Blametruth's Mega Blastoise set.
Filling the tank:


At this point, I decided that Mega Blastoise should be my main offensive Pokemon, as it can cover Trevenant, whom is a defensive Pokemon. Blastoise's main weaknesses are Electric and Grass hits, obviously, so I chose Entei to deal with Grass types and Donphan for Electrics.
Entei is a very fun Pokemon, that can hit like a truck in UU. Entei has gotten so much better now as well with the addition of Sacred Fire to his moveset. While weaker than Flare Blitz, Sacred Fire has a high burn chance and doesn't cause recoil, allowing Entei to survive longer. Due to the 115 base attack, I decided to go with a choice banded set, which can punch wholes into a lot of opponents.
Donphan was chosen because, looking at my team at this point, I realized I needed a spinner for Entei, someone to set up rocks, cause rocks, and someone that can take hits. I went with a fully defensive Donphan. One of my biggest threats, which will be listed down below, will not always be OHKO'd with Adamant Donphan with max attack after Rocks, so defensive feels like the better way to go.
Rounding out the edges:


At this point, I felt like I had a lot of power and just needed to cripple the opponent's speed. Thus steps in the last two Pokemon, one for land and one for air.
Galvantula allows me to set up sticky web, which will allow Mega Blastoise to outspeed (I'm assuming) everything, and allows Trevenant to outspeed a lot of Pokemon to set up a Substitute. I went with a Focus Sash lead set, using Thunder and Bug Buzz for STAB and Volt Switch to switch out.
Jirachi cripples the speedy things that laugh at Sticky Web: Malamar, levitators, and flying Pokemon. How does it do that? Thunder Wave. Crippling anything that cant be caught in the sticky web, as well as paraflinching everything. Jirachi can cripple one of my two threats, allowing Blastoise to revenge kill it.
The movesets:

Shell Smash (Blastoise) @ Blastoisinite
Ability: Rain Dish
Shiny: Yes
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature
- Aura Sphere
- Ice Beam
- Water Spout
- Water Pulse

Tail Glow (Donphan) @ Leftovers
Ability: Sturdy
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Rapid Spin
- Stealth Rock
- Earthquake
- Ice Shard

Defensive (Entei) @ Choice Band
Ability: Pressure
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature
- Sacred Fire
- Extreme Speed
- Stone Edge
- Iron Head

Ron Weasly (Galvantula) @ Focus Sash
Ability: Compound Eyes
EVs: 252 SAtk / 4 SDef / 252 Spd
Timid Nature
- Sticky Web
- Thunder
- Volt Switch
- Bug Buzz

Dream Breaker (Jirachi) @ Leftovers
Ability: Serene Grace
Shiny: Yes
EVs: 224 HP / 252 Atk / 32 Spd
Adamant Nature
- Iron Head
- Thunder Wave
- Zen Headbutt
- Fire Punch

Ghostly Tree (Trevenant) @ Sitrus Berry
Ability: Harvest
Shiny: Yes
EVs: 252 HP / 4 Atk / 252 SDef
Careful Nature
- Curse
- Horn Leech
- Substitute
- Will-O-Wisp
Threats:



Exploud hits like a truck. Choice Specs Boomburst just hurts everything, and I dont think I have anything that can switch in on it. Even my special wall, Trevenant, takes 64-76% from Boomburst, which actually does more than Ice Beam to Trevenant (scurry!). Exploud can be revenge killed with Mega Blastoise, but by then the damage may have already been done.
Milotic walls me to hell. Trevenant can't do too much to it, due to recovering off Curse damage, and Horn Leech not being able to give a high enough damage output. A potential fix to this is toxic on Trevenant, over Will-O-Wisp.
Noivern, due to Infiltrator, hits through Substitute. Specs Noivern, like Exploud, hits like a truck. Noivern will not always be OHKO'd by Adamant max attack Ice Shard after stealth rocks. An option is switching Fire Punch with Ice Punch on Jirachi, which will always OHKO Noivern. A back up strategy is 2 Ice Shards from Donphan, if it has sturdy, or 1 Ice Shard and 1 ESpeed from Entei.
Caught in the act:
This one is a pretty quick domination with Trevenant
This one was a really close game that I could have won, had I locked myself into ESpeed over Stone Edge.
This one shows how Curse can wall break.
Importable:
Ghostly Tree (Trevenant) @ Sitrus Berry
Ability: Harvest
Shiny: Yes
EVs: 252 HP / 4 Atk / 252 SDef
Careful Nature
- Curse
- Horn Leech
- Substitute
- Will-O-Wisp
Shell Smash (Blastoise) @ Blastoisinite
Ability: Rain Dish
Shiny: Yes
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature
- Aura Sphere
- Ice Beam
- Water Spout
- Water Pulse
Defensive (Entei) @ Choice Band
Ability: Pressure
EVs: 4 HP / 252 Atk / 252 Spd
Adamant Nature
- Sacred Fire
- Extreme Speed
- Stone Edge
- Iron Head
Tail Glow (Donphan) @ Leftovers
Ability: Sturdy
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Rapid Spin
- Stealth Rock
- Earthquake
- Ice Shard
Dream Breaker (Jirachi) @ Leftovers
Ability: Serene Grace
Shiny: Yes
EVs: 224 HP / 252 Atk / 32 Spd
Adamant Nature
- Iron Head
- Thunder Wave
- Zen Headbutt
- Fire Punch
Ron Weasly (Galvantula) @ Focus Sash
Ability: Compound Eyes
EVs: 252 SAtk / 4 SDef / 252 Spd
Timid Nature
- Sticky Web
- Thunder
- Volt Switch
- Bug Buzz