Ok i might begin with my very own Froslass:
ParaCloak Bitch
Item: Leftovers
EVs: 224 HP / 32 SAtk / 252 Spd }
Timid Nature (+Spd, -Atk)
~ Thunder Wave
~ Substitute
~ Spikes
~ Blizzard/Shadow Ball/Confuse Ray/Taunt
You need abomasnow support, but after hail is up, you're set, you come into something you'll beat or scare and put a sub, the paralize and just begin to spike up, using sub whenever needed, you have a 60% chance of being hit by a 100 acc move, that makes you likely to use a sub and have a free turn (i've had many times three free turns) then you can easily swich out or attack whit 100acc blizzard, confuse ray works for extra annoyance and to reduce the chance of set-up (which taunt helps avoid), but you become taunt bait yourself, steel pokes are not gonna be such a concern when paralized unless using bullet punch (just make sure you have destroyed bisharp) and the EVs are tailored to max speed and to be able to get in 4 times if rocks and create subs while you wait the miss, Taunt really helps when going against stuff like chansey or mostly any wall and begin to set up spikes, and even when you already have spikes up, you can still use the palahax and the slower foes (and if you see an aboma in the other team you can use her as a lead)