Well, this is going to be long, so if you want just go tl;dr, and move on, but, this is how i completed my hail team.
The obvious first word here is Hail.
With that in mind, it's obviously Abomasnow inside the team, but the moves, the evs, basically, the only thing i had was Abomasnow, nothing else. I don't know where it would be, or what moves it would carry.
I decided that the team would be focused on stopping their leftover recovery with Hail, and using Toxic Spikes to wear them down, along with Stealth Rock. I decided to go with Forretress, as it supplied both Toxic Spikes and Stealth Rock. Since i was relying on indirect damage to win, i decided that it would not have attacking moves. Rather, I wanted it to be physically bulky, so the obvious solution was Rest/Sleep Talk. Item would obviously be Leftovers.
To recap, what i have now was
1. Abomasnow.
2. Forretress @ Leftovers, T Spikes, Stealth Rock, Rest, Sleep Talk.
I needed a special wall, obviously. The main thing that struck out to me was Tentacruel. It was Bulky enough, and it was another source of Toxic Spikes. Again, i needed it to keep coming it and putting out those spikes, so Rest / Sleep Talk again. The choice now was between Rapid Spin and Knock Off. I'll let that off for now. Again, item is Leftovers.
I needed a backup Tank which could block both sides of the spectrum. It was definitely one of those legendary pixies, i just had to think which one. At length, i decided to go with Celebi. The obvious move was Recover, and i went with Heal Bell to remove status from my team. Again, indirect damage, so i went with Leech Seed. Finally, to top it off, i needed to stall, so i went with Protect. Again, item is Leftovers.
Recap:
1. Abomasnow.
2. Forretress @ Leftovers - T Spikes, SR, RestTalk
3. Tentacruel @ Leftovers - T Spikes, Resttalk, (Knock Off / Rapid Spin)
4. Celebi @ Leftovers - Leech Seed, Protect, Recover, Heal Bell.
I know i would need something that will counter everything in a pinch. Just in case some Ttar comes out and uses taunt or Gyarados / Salamence Dragon Dance or something. The most obvious Pokemon would be a Scarf Gengar. Not only does this outspeed a lot of things in existence, it even outspeeded some that had +speed. (Dragon Dance, basically). My first move of choice was Destiny Bond, so that it could take down anything. My two biggest fears in this team was Taunt Gyarados and Taunt Tyranitar, so Focus Blast and Thunderbolt came next. Finally, i went with Hidden Power Ice to destroy Salamence (And with Platinum out, Skymin). And for an added note, it blocked Rapid Spin.
With this out, i could finally decide on Abomasnow. I went with Leech Seed first, for that indirect damage. Sub obviously came next, as Subseeding is a good tactic on Abo. Blizzard was a good choice, as it had STAB and came with the Hail. Finally, since it was my lead, I went with Protect to scout. My item of choice was the Leftovers, to support Leech Seed Recovery.
Recap:
1. Abomasnow @ Leftovers - Leech Seed, Blizzard, Protect, Substitute.
2. Forretress @ Leftovers - T Spikes, SR, RestTalk
3. Tentacruel @ Leftovers - T Spikes, Resttalk, (Knock Off / Rapid Spin)
4. Celebi @ Leftovers - Leech Seed, Protect, Recover, Heal Bell.
5. Gengar @ Choice Scarf - Destiny Bond, Focus Blast, Thunderbolt, Hidden Power Ice
One final Pokemon. A good tank. I just decided on Zapdos, and went with SubRoost. Again, to stall. Thunderbolt obviously came next. For my final move, I already had too many Ice Moves, and I was slightly weak on the Special Side. So i placed Light Screen on Zapdos, and made it Specially Oriented. Again, obvious Leftovers here.
So, with all 6 chosen, I decided that Stealth Rock wasn't a problem for my team. I had no focus sash, and nothing which was totally weak against it apart from Abomasnow, which had Leech Seed recovery, and Zapdos, which could roost. So I took Knock Off.
Final:
Abo @ Leftovers
- Leech Seed
- Protect
- Blizzard
- Substitute
Forry @ leftovers
- Toxic Spikes
- Stealth Rock
- Rest
- Sleep Talk
Tentacruel @ Leftovers
- Knock Off
- Toxic Spikes
- Rest
- Sleep Talk
Celebi @ Leftovers
- Recover
- Leech Seed
- Heal Bell
- Protect
Gengar @ Choice Scarf
- Destiny Bond
- Focus Blast
- Thunderbolt
- Hidden Power Ice
Zapdos @ Leftovers
- Thunderbolt
- Roost
- Substitute
- Light Screen
As for EVs, it was mostly defensive oriented, apart from Gar which had Modest 252 SpA, 252 Speed.
This was the team which took me up to Round 3 of the Strikeout Tourney, until i was forced to retire due to Shoddy which stopped working on my com.
Also, Gouki once swept this team 6-0 with a CM Clefable, as I had no Physical Moves. That was the most embarrassing part of this team's career.