Ok as I said in a comment I will try to rate this team, and I hope I helped!
Rotom-Frost
Rotom-Frost is a good Pokemon, but I honestly think Its not that good in mono-type, with it's bad speed, and HP. So I'm going to replace him with a better and more stronger special attacker, which can wall too.
Glaceon
Glaceon is a good pokemon on your team, it has a very high sp.atk and get's support moves as well. As Rotom-Frost seems like it was a staller, I'll make this guy also and pass Wishes.
Glaceon @ Leftovers
Ability: Ice Body
EVs: 252 Def / 252 HP / 4 SAtk
Bold Nature
- Wish
- Toxic/Heal Bell
- Protect/Heal Bell
- Frost Breath
With base 110 defense and 95 sp.def, this thing can support your team with Wish support to restore HP, namely Kyureum-B. Toxic is fo stalling and taking out opponents HP. Heal Bell can heal your team's status, which is always helpful. Protect is to get your wish and stall out Toxic.
Mamoswine
He's good, but you should definetly have Stealth Rock instead of Stone Edge as with Spikes from Froslass, it can discourage your opponent from switching, and will rack up damage to help you get a few KO's, Especially against Fire Teams on which you struggle on.
Frosslass
I like it, suicide lead, use Ice Beam instead of Thunderbolt for STAB and more damage.
Kyurem-Black
Change Scarf to Life Orb, you'll see why. Change the Nature to Naive.
Kyurem-Black @ Life Orb
Ability: Teravolt
EVs: 252 Atk / 252 HP / 4 SDef
Adamant Nature
- Dragon Claw/Outrage
- Stone Edge
- Fusion Bolt
- Iron Head
This is a physical set that will help your team's weakness against Fire Types, as you have Stone Edge, with the power, and Dragon Claw is STAB.You could use Outrage, but if you see a Mono-Fairy Team you'r screwed, or if the opponent has a Fairy Type. But then, you have Iron Head to deal with them.
Jynx
I love using Jynx. Your set is good, but as you have no scarfer Jynx will be very useful, plus it get's Trick which is useful for screwing up walls.
Use this set, Focus Blast, Trick, Ice Beam and Psychic.
This way, you have a fast special attacker that can screw walls, and Mono-Fighting with Psychic. Focus Miss for Rock types super effectively and Ice Beamis STAB. Trick will stop walls and Setup Sweepers and give the happiness of being able to switch moves.
Weavile
I see nothing wrong with this one, but as you have 2 great physical attacker in Kyureum-b and Mamoswine, I think I'll replace him for someone despratly needed on this team. A spinner.
Cryongal
EVERY or most Ice Type teams need a spinner as Ice types are 25% weak to Stealth Rock, that's bad. Cryognal is the only Ice Type Rapid Spinner bar Avalugg but Avalugg doesn't get Recover. Cryongnal will be your your Light Screener or Reflecter, and will spin. Here is a set.
Cryogonal @ Light Clay
Ability: Levitate
EVs: 252 HP / 4 SAtk / 252 Spd
Timid Nature
- Reflect/Light Screen
- Recover
- Rapid Spin
- Ice Beam
Your Spinner, Ice Beam is STAB, Evs allow HP and more speed to outspeed and Reflect and Lightscreen will boost your team's defenses, choose whichever you prefer. Rapid Spin takes Hazards of your field.
Additional Option!
Cloyster
Cloyster is a very good sweeper that can be put on your team, but I don't know where. It is very useful against Fire Types and Rock Types, and can sweep an unprepared team.
Cloyster @ White Herb
Ability: Skill Link
EVs: 252 Atk / 4 SAtk / 252 Spd
Naughty Nature
- Icicle Spear
- Rock Blast
- Surf
- Shell Smash
A setup sweeper. Icicle spear is STAB and goes 5 times thanks to Skill Link, and same for Rock Blast except for STAB. And also useful against Fire Types like Talonflame and Charizard-Y.Surf makes you mixed and is STAB, also helps against Defensive Walls.
Well I'm not really that good of a rater, but I hoped I helped! Please if you are a good rater please help me on my rating and give me tips!
:) Kronos