Here's a triples team I made few weeks ago
It's all about KO'ing everything
@ Life Orb
Trait: Magic Guard
EVs: 172 HP / 56 Def / 252 SAtk / 28 SDef
Quiet Nature (+SAtk, -Spd)
- Trick Room
- Psychic
- Shadow Ball
- Focus Blast
This one uses Trick Room, so the beasts can sweep much easier
Psychic, Shadow Ball and Focus Blast to deal high damage
@ Sitrus Berry
Trait: Regenerator
EVs: 252 HP / 56 Def / 200 SDef
Sassy Nature (+SDef, -Spd)
- Rage Powder
- Knock Off
- Power Whip
- Hidden Power [Fire]
This one will use Rage Powder at first turn, to help Reuniclus and Lickilicky to set up
It's bulky enough to survive many attacks, Sitrus Berry is very useful to stay alive the first turn when using Rage Powder
Knock off when needed, Power Whip and HP Fire to deal damage
@ Leftovers
Trait: Cloud Nine
EVs: 184 HP / 252 Atk / 72 SDef
Brave Nature (+Atk, -Spd)
- Curse
- Return
- Power Whip
- Rock Slide
This one sets up Curse first turn, and maybe turn 2 if needed
Return for strong STAB damage and Power Whip against those weak to grass
Rock Slide to hit multiple opponents
Cloud Nine really helps against weather teams
@ Life Orb
Trait: Reckless
EVs: 252 HP / 252 Atk / 4 Def
Brave Nature (+Atk, -Spd)
- Flare Blitz
- Head Smash
- Wild Charge
- Hammer Arm
This beast comes in when one of the first 3 gets KO'd
Flare Blitz and Head Smash for insane damage
Wild Charge against water types and Hammer Arm to slower himself to move first in TR
@ Life Orb
Trait: Swarm
EVs: 252 HP / 252 Atk / 4 Def
Brave Nature (+Atk, -Spd)
- Double-Edge
- Iron Head
- Megahorn
- Quick Guard
This one is very strong as well, Double-Edge for huge damage
Iron Head for STAB and Megahorn for insane damage
Quick Guard to protect the team from priority moves
@ Life Orb
Trait: Sheer Force
EVs: 200 HP / 252 Atk / 56 SDef
Adamant Nature (+Atk, -SAtk)
- Ice Punch
- Crunch
- Rock Slide
- Aqua Jet
Feraligatr will finish off other opponents, but it's very rare he comes out to battle, because at that time, the opponent is already lost
Rock Slide with Sheer Force deals nice damage
Ice Punch against Dragons, Crunch for ghost/psychic types
Aqua Jet before dying when TR isn't up anymore
Any suggestions could be useful, even though it does really good in battles