Hey, pineapplesrule from Marriland and Youtube here. This is my first post RMT on Smogon but I've been looking at RMTs here for a while and am gonna take the same format...
*Changes in red
(Mono-hail) Team at a Glance:
In-depth:
Abomasnow:
Hasty@Leftovers
78 Attack/180 Sp atk/ 252 Speed
Ability: Snow Warning
Moves:
Substitute
Leech Seed
Focus Punch
Blizzard
Standard hail set-up Abomasnow. I gave it a Timid nature to outspeed lead Status inducers and such. I decided to give it 180 evs in sp atk because I figure it'll be harder to set up sub then just blizzard instead. On this team, i plan on abusing Blizzard on Abomasnow, Porygon-z and Walrein.
Dusknoir
Careful Nature@ Leftovers
252 HP/252 Sp def/6 atk
Moves:
Will-o-Wisp
Thunderpunch
Shadow sneak
Pain Split
Again, another standard moveset. Dusknoir covers Abomasnow's as well as Porygon's fighting weakness. It also cripples Physical sweepers with WoW and a flamethrower that would've been used on Abomasnow does nothing to Dusky.
Walrein
Bold Nature@Leftovers
252 HP/80 Def/178 Sp def
Ability: Ice body
Moves:
Protect
Toxic
Substitute
Blizzard
Toxic-stall Wallrein. Ice body works well in conjuction with Toxic and protect to ultimately stall and kill the opponent. I used to carry yawn, but it wasn't doing much. Great late game wall, can easily survive outrage from garchomp (it's uber anyway) and is able to take many hits and finish the opponent off with Blizzard. Probably the centerpiece of the main team.
Gliscor:
Adamant Nature@Leftovers
252 atk/252 Spd/6 Def
Hyper Cutter
Moves:
Swords Dance
Aerial Ace
Earthquake
Ice fang
Unusual Gliscor moveset. Most people expect a wall and then get a powerful Earthquake instead. I use donphan instead of glis. Set up swords dance, then sweep. Gliscor is pretty fast, 317 max speed. It can take a hit or two as well.
Porygon-Z@Choice Scarf
Modest Nature
Download
252 atk, 200 Speed/58 HP
Moves:
Blizzard
T-bolt
Tri Attack
Dark pulse
Standard Pory. Instead of ice beam, using blizzard to abuse the 100% accuracy in hail. My special Sweeper for this team and it's a pure beast.
Donphan@leftovers
Impish Nature
252 hp/252 def/6 atk
Sturdy
Moves:
Earthquake
Rapid Spin
Stealth Rock
Ice shard
My physical wall, not much to say. Spinner, and SR setup.
Team Overview:
This team is mostly stall based thanks to Walrein and his toxic. Gliscor and Porygon are there when the other team is tired out and poisoned. Abomasnow also helps to stall with his leech seed. Overall i made a stall team because of the hail. Thanks for reading and tell me what you think.
*Changes in red
(Mono-hail) Team at a Glance:






In-depth:

Abomasnow:
Hasty@Leftovers
78 Attack/180 Sp atk/ 252 Speed
Ability: Snow Warning
Moves:
Substitute
Leech Seed
Focus Punch
Blizzard
Standard hail set-up Abomasnow. I gave it a Timid nature to outspeed lead Status inducers and such. I decided to give it 180 evs in sp atk because I figure it'll be harder to set up sub then just blizzard instead. On this team, i plan on abusing Blizzard on Abomasnow, Porygon-z and Walrein.

Dusknoir
Careful Nature@ Leftovers
252 HP/252 Sp def/6 atk
Moves:
Will-o-Wisp
Thunderpunch
Shadow sneak
Pain Split
Again, another standard moveset. Dusknoir covers Abomasnow's as well as Porygon's fighting weakness. It also cripples Physical sweepers with WoW and a flamethrower that would've been used on Abomasnow does nothing to Dusky.

Walrein
Bold Nature@Leftovers
252 HP/80 Def/178 Sp def
Ability: Ice body
Moves:
Protect
Toxic
Substitute
Blizzard
Toxic-stall Wallrein. Ice body works well in conjuction with Toxic and protect to ultimately stall and kill the opponent. I used to carry yawn, but it wasn't doing much. Great late game wall, can easily survive outrage from garchomp (it's uber anyway) and is able to take many hits and finish the opponent off with Blizzard. Probably the centerpiece of the main team.

Gliscor:
Adamant Nature@Leftovers
252 atk/252 Spd/6 Def
Hyper Cutter
Moves:
Swords Dance
Aerial Ace
Earthquake
Ice fang
Unusual Gliscor moveset. Most people expect a wall and then get a powerful Earthquake instead. I use donphan instead of glis. Set up swords dance, then sweep. Gliscor is pretty fast, 317 max speed. It can take a hit or two as well.

Porygon-Z@Choice Scarf
Modest Nature
Download
252 atk, 200 Speed/58 HP
Moves:
Blizzard
T-bolt
Tri Attack
Dark pulse
Standard Pory. Instead of ice beam, using blizzard to abuse the 100% accuracy in hail. My special Sweeper for this team and it's a pure beast.

Donphan@leftovers
Impish Nature
252 hp/252 def/6 atk
Sturdy
Moves:
Earthquake
Rapid Spin
Stealth Rock
Ice shard
My physical wall, not much to say. Spinner, and SR setup.
Team Overview:
This team is mostly stall based thanks to Walrein and his toxic. Gliscor and Porygon are there when the other team is tired out and poisoned. Abomasnow also helps to stall with his leech seed. Overall i made a stall team because of the hail. Thanks for reading and tell me what you think.