iron banner is basically 6v6 domination but once your team captures all 3 zones whether or not the other team is trying to secure a zone, all three zones become locked for 20 seconds so your team can massacre your enemies without worrying about the objective however once the 20 seconds are up the zones turn neutral and you’ll need to cap them again
Wins give you more of this currency than losses, and the more you play in the week, the more rewards you’ll be able to cash in and receive.
wins give you 5 tokens while challenge completions and losses give you 2, meanwhile milestone reputation bundles give you 15. Each time you level up the faction, you receive an engram with Iron Banner loot. you can also purchase specific Iron Banner weapons and gear if you have enough tokens.
Destiny 2 