Raise a Church (build menu, big stone footprint). Stand next to it, press E to open the clan UI and found your clan. Clans are invite only: the leader clicks another master and picks Invite to clan, and they accept from the banner that pops up. The leader can kick members from the Church roster.

Clan name must be 3-24 characters. The cap on members is 10.

Every storage building (Silo, Shed, Woodcutter, Quarry, Blacksmith) has a "share with clan" toggle in its header. Once on, every clanmate can deposit and assign their slaves to work there. Only the owner and the clan leader can take things out.

Doesn't affect Houses or the Church. Your stable's still yours.

At the Church, the leader can declare war on another clan for 500 gold. The whole shore gets a 10-minute warning, then:

• You can fight opposing clan members anywhere — except the market and the spawn ring, which stay safe.
• A war runs at least 24 hours once it starts; after that either leader can call a truce.
• After a truce the same two clans can't go to war again for 24 hours.

Anyone can leave their clan from the Church. The leader can disband the whole thing the same way — every shared building reverts to its original owner.