Taivaan pilarit

Players take cards clockwise until all cards are taken or everyone has passed; you may take multiple cards as the draft proceeds, but if you pass you may not take any more cards that round (p.5).

Yes — without a stonecutter you cannot sell stones, without a woodworker you cannot buy wood, and without a mortar mixer you cannot earn victory points with a mason; these special starting craftsmen grant those market/access benefits (p.1).

You may have a maximum of 5 craftsmen; if you take a craftsman while already at five you must discard one of your current craftsmen to make room, and you may also pay for and immediately discard a craftsman to deny it to others (discarded craftsmen are removed from the game) (p.1, p.5).

Players at the market may buy or sell resources in turn (there are at most four cubes of any one resource available); purchase prices are stone 4, wood 3, sand 2 gold each, you cannot buy metal at the market, and selling pays (metal 5, stone 4, wood 3, sand 2); you may not buy and sell the same resource type in the same round (p.7–p.8).

You may pass and place your drawn master builder on the cost track above the current value, the cost marker is decreased by 1, and after all builders are drawn the passed builders are placed for free in the order they were passed (leftmost/earliest passed placed first); when you do place a builder you must pay the current cost shown (p.6).

During the Cathedral phase at the end of each round you choose which resources to use and apply each craftsman's formula (resource cost → VP and capacity limits) to score VPs; the resources you use are then returned to the resource fields (removed from your supply) and craftsmen capacities limit how often each formula may be applied (p.8; craftsmen details p.1).