I love you AM. I kinda want to go over some elements one can include when building around President Snow.
Potential Sets: This should be fairly obvious, SD with Ice Shard, Wood Hammer, and EQ or AoA Special with Blizzard, Giga, Focus Blast, and Ice Shard. If regular snow is allowed, a similar could be run with a life orb with another mega.
Trapping: Particularly for Heatran or Ferrothorn. We may even see teams with both Magneton and Dugtrio, as they eliminate almost all steels, which help Snow sweep or wallbreak much better
Volt-Turn Core: This may be the most common way to build with. Things including Rotom-Wash, probably strictly Lefties variants due to hail, Tornadus-Therian, and the like help check multiple threats to Abomasnow, including Talonflame, Heatran, and Keldeo, albeit the latter is a check.
Ice Spam: We probably may see one or two teams revolved around this strategy. Things like Kyurem or even Jynx and Rotom-Frost can take part in this Christmas miracle. Most likely we see the trapping element involved with these types of teams.
Trick Room: Probably another strategy we see a team utlize, as Mega Snow is actually really good on TR and can utilize a Ferrothorn lure while being a hard hitter similarly to Mega Steelix on the most common TR variant. I'm neither experienced playing with TR nor play it well so I cant offer too much input on this.
Lures: Things to lure Talonflame, Heatran, and most Fire types in general. Things like Coba Keldeo, Earthquake on Latios, and the the like seem to be the most effective in checking threats while luring others, providing multiple roles for a Mega Abomasnow team.
Other Partners: Definitely a spinner or defogger of sorts, the aforementioned Latios can defog away hazards and still lure Heatran as previously stated. SpD SD Wisp Talonflame also makes a sick partner especially if you are play the trapping or lure game, as it really enjoys Heatran being gone as well as luring in other weather setters such as Politoed, Tyranitar, and Hippowdon and weakening them with Will-o-Wisp.
Rough Draft: Here's a rough draft of a team I threw together following this guide:
Snow (still deciding SD or AoA) / SpD SD Wisp Acro Talonflame / Earthquake Defog Latios / Lefties Rotom-Wash / SR SpD Heatran / Iron Tail AV Tornadus-Therian
If I have time, ill write a proper description and import but im going on vacation tomorrow so I don't know