What is a good moveset for abomasnow on Pokemon?

Answer 1

Ice Beam (or Blizzard), Grass Whistle, Wood Hammer and Avalanche. Ice beam and Blizzard are the strongest moves an ice type can learn. It'll give a lot of damage to an opponent who is weak to ice types (Dragon and grass) but you only have 5 moves. Grass Whistle puts a Pokémon to sleep. Wood Hammer causes a pretty strong move, but the Pokémon that uses the move takes damage. And Avalanche inflicts more damage if the Pokémon who uses it is hurt in the same turn. Be aware, the line up of moves only goes up to about 20; so have a backup Pokémon in your battle or Abomasnow will run out of moves.

Answer 2

Fire types do 4X damage, because Fire has an advantage to both Ice and Grass types.