Snowball Fight
Defeat combatants with snowballs. Snowballs can be found near public events, within the Vanguard Ops playlist activities, Dares of Eternity, throughout the Throne World, Europan Lost Sectors, and in the strike that corresponds with the weekly Nightfall.
"A well-aimed snowball is a festive way to say, 'I'm thinking of you.'" —Eva Levante