Your clan can level up and grow by accumulating XP acquired by all members.
There is no limit to how much XP can be acquired by each individual member,
but the maximum XP that can count towards the clan level varies according to the clan grade.

Clan XP can be acquired through various ways.

[Chests]

Main Lobby Slot Chests:

Silver: 2 XP
Gold: 5 XP
Rare: 10 XP
Unique: 30 XP
Epic: 50 XP

Star Chests:

Match Star Chests (1vs1): 5 XP
Battle Star Chests (Battle Royale): 5 XP

Superb Shop Chests:

Superb Rare: 15 XP
Superb Unique: 35 XP
Superb Epic: 55 XP

SUPERB MAGIC CHEST: 5 ~ 10XP
SLUGGER'S CHEST: 90XP
Draft Box : +5 ~ 15 XP
ARTIFACT CHEST: +15XP

[Clan Events]

Clan Battles

Participation: 1 XP
Wins: 3 XP