I've had this team kicking around for awhile, a gardevoir rain team with a few interesting sets mixed in. The thing that sticks out at team preview is Krookodile, though every mon has something unique or interesting about their build barring ludicolo. The team has two "modes" or strategies (it's based off of a vgc team): supporting Mega Gardevoir, and rain offense.
Mega Gardevoir is two attacks calm mind, a really uncommon set but I needed gardevoir to be fast while taking a hit from Talonflame (which it does) while still having some offensive presence on the team. CM Gard is supported by Fake Out from AV Ludi and Rage powder from Amoonguss. Amoonguss is using Sludge Bomb over the standard Giga Drain for winning the Amoonguss mirror. Gardevoir is also supported by Tailwind Zapdos who carries Heat Wave to help vs Steel types, particularly Ferrothorn. Zapdos is EVd to outspeed Timid Volcanion/Jolly Breloom with the remaining EVs in special defense, but you probably want to add some extra speed creep. Gardevoir is also benefited by Krookodile's Intimidate and Krook's ability to check Steel & Fire types. Krookodile was chosen over Landorus-T for its better matchup against Aegislash, Gengar, and Bisharp. It's also really cool for knocking off Landorus-Ts Choice Scarf as it switches in, leaving Lando slower than Gardevoir without it's Scarf, or unable to take Hyper Voice as well without an Assault Vest. Lastly, Scarf Politoed assists Gardevoir against Heatran, Talonflame, and even Aegislash to some extent thanks to encore. Rain Dance is included as well to help against Mega Charizard Y. Politoed is EVd to survive a Return from Adamant Mega Kangaskhan and outspeed max speed Thundurus.
As for the rain "mode", obviously Politoed and Ludicolo are the focus here, with my Politoed being much more offensive than most builds. It's pretty easy to see how the weather focused games are played; Zapdos and Krookodile both have good MUs against Thundurus, and Amoonguss and Gardevoir can take care of Grass types, Rotom-Wash, and Keldeo. These Pokemon pave the way for Ludicolo and Politoed.
I can't find any replays against serious teams but I've used this team quite a bit, and it's a lot of fun so give it a try. This sort of team composition (something to distract at team preview + 4-5 creative builds) is my favourite way to do creative and non standard team building at a competitive level, which is why I submitted this team.