"Ol No Name" - VGC'17 (credit to @"Squeab" for the name)
Just a quick team I threw together. I liked the idea of using Sand around Nihilego due to it getting a SpDef boost in the sand and this calc impressed me
252+ SpA Tapu Lele Psychic vs. 0 HP / 0 SpD Nihilego in Sand: 138-164 (75 - 89.1%) -- guaranteed 2HKO
From the start, I intended on using scarf Nihilego as a counter measure again Garchomp who currently tends to run the Choice Scarf very often. Scarf also allows me to outspeed Kartana, Salazzle and Tapu Koko provided they aren't holding a scarf themselves or have been influenced by speed control (Tailwind, Thunder Wave (on me) and so forth)
Due to my Nihilego being at a high base speed, to offset that I chose Gigalith. Gigalith may share weaknesses with Nihilego but I found that being an answer to Trick Room, a Sandstorm setter and a strong physical attacker with a good STAB more than made up for the loss in defensive synergy
Stoutland takes advantage of the Sandstorm and outspeeds most threats. He's my Z user as I found Z-Giga Impact to be a good means of dealing a fast 200 BP damage that can OHKO an unprepared opponent. After You is a tech I use as a last ditch effort to flinch the opponent down with Gigalith's Rock Slide or simply to get an ally to fire off a move to turn the tides of the battle as Stoutland only running Normal moves cannot cover
,
and 
Provided that Gigalith does break weather teams with its own ability and matches up well against Sun and Hail, I needed a secondary answer to Rain teams as well as
types. Tapu Koko does this job very well. I opt for Focus Sash (and yes, I'm aware that Sandstorm breaks the sash) to give Koko a free turn before fainting and Sky Drop is to disrupt Trick Room set up or interrupt an attack that could be fatal to an ally. Hidden Power Fire over Dazzling Gleam because my team has a huge weakness to Kartana
Tapu Fini gives me a second Terrain option and it hits relatively hard with the Choice Specs. It's a filler that I've found useful in spite of me not having a solid reason to have it here other than it being good stuff
Garchomp is my answer for Muk, opposing Tapu Koko, Marowak, Toxapex, Tapu Lele (provided Poison Jab can OHKO the variant) and Arcanine
I've played around 4-5 test matches with it and I'm around the 1270s - 1300s on the Showdown VGC ladder
http://replay.pokemonshowdown.com/gen7vgc2017-536588050
http://replay.pokemonshowdown.com/gen7vgc2017-536586448
http://replay.pokemonshowdown.com/gen7vgc2017-536584010
http://replay.pokemonshowdown.com/gen7vgc2017-536582653
Just a quick team I threw together. I liked the idea of using Sand around Nihilego due to it getting a SpDef boost in the sand and this calc impressed me
252+ SpA Tapu Lele Psychic vs. 0 HP / 0 SpD Nihilego in Sand: 138-164 (75 - 89.1%) -- guaranteed 2HKO
From the start, I intended on using scarf Nihilego as a counter measure again Garchomp who currently tends to run the Choice Scarf very often. Scarf also allows me to outspeed Kartana, Salazzle and Tapu Koko provided they aren't holding a scarf themselves or have been influenced by speed control (Tailwind, Thunder Wave (on me) and so forth)
Due to my Nihilego being at a high base speed, to offset that I chose Gigalith. Gigalith may share weaknesses with Nihilego but I found that being an answer to Trick Room, a Sandstorm setter and a strong physical attacker with a good STAB more than made up for the loss in defensive synergy
Stoutland takes advantage of the Sandstorm and outspeeds most threats. He's my Z user as I found Z-Giga Impact to be a good means of dealing a fast 200 BP damage that can OHKO an unprepared opponent. After You is a tech I use as a last ditch effort to flinch the opponent down with Gigalith's Rock Slide or simply to get an ally to fire off a move to turn the tides of the battle as Stoutland only running Normal moves cannot cover



Provided that Gigalith does break weather teams with its own ability and matches up well against Sun and Hail, I needed a secondary answer to Rain teams as well as

Tapu Fini gives me a second Terrain option and it hits relatively hard with the Choice Specs. It's a filler that I've found useful in spite of me not having a solid reason to have it here other than it being good stuff
Garchomp is my answer for Muk, opposing Tapu Koko, Marowak, Toxapex, Tapu Lele (provided Poison Jab can OHKO the variant) and Arcanine
I've played around 4-5 test matches with it and I'm around the 1270s - 1300s on the Showdown VGC ladder
http://replay.pokemonshowdown.com/gen7vgc2017-536588050
http://replay.pokemonshowdown.com/gen7vgc2017-536586448
http://replay.pokemonshowdown.com/gen7vgc2017-536584010
http://replay.pokemonshowdown.com/gen7vgc2017-536582653
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