Question: what are clan tiers in warframe?
Answer: At its simplest, a Clan's rank or tier tells you how many members can be part of that Clan at one time. There are currently five Clan Tiers that a Clan can occupy: Ghost Tier, Shadow Tier, Storm Tier, Mountain Tier, and Moon Tier. Ghost Clans are the smallest, with a maximum of only 10 members at a time.