All sync pairs that have access to Ice Guard without the use of Lucky Cookies are formed with Pokémon that can have the Ability Thick Fat in the core series games, which also reduces damage from Ice-type moves.
All sync pairs that have access to Ice Guard without the use of Lucky Cookies also have access to Fire Guard without the use of Lucky Cookies.
buddy moves, by 30%. It does not reduce damage from sync moves or 
max moves.
Chewy Lucky Cookie
