Can I chain Book of Moon to Gardna's first effect?. note that i tried this on WC 2010 by targeting a FD Gardna with Shield Crush and tried to chain to its(Gardna) effect, but i couldn't. additional details: Mid Shield Garnda has the exact text. but the rulings say its a Trigger effect. so why i couldn't chain to Big Shield Gardna since they are the same?
Years. MANY years. Sap is nothing more than a sugar based syrup kind of thing, which resembles honey as that made by bees. Pine trees exude sap through cracks in the bark. For the tree, it is similar to you bleeding. The sap closes the wound. The sap collects in crevices in the bark. The water in the sap evaporates. The sap loses water and eventually solidifies. Even solid, it still contains a significant amount of water. It has to lose this water to be durable over many years as AMBER.
That is approximately correct in a common flat ceiling area without soffits, headers or bulkheads. Otherwise, one-per-room (however small) and/or one per divided area (soffits, headers or bulkheads), however small. If you have a forced air HVAC system, it is also good practice to install one in the return-air duct (and some codes require this). This helps to cover 'missed' areas. Good luck with it.