Bone Shrine

Bone Shrines are a permanent unlock you can buy from the Bone Trader. A bone shrine lets you store up to ten bone charges. When you spend one of the charges, you will immediately get a large amount of all three basic resources--food, wood, and metal. The amount you get is based on your loot drop modifiers (worker production, Loot perk, and so on), and further is based on the number of bones you have spent on the permanent unlock.

# How it works

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> Gain a Bone Charge every 4 hours, which can be consumed to gain 10 minutes worth of Food, Wood and Metal production (affected by looting bonuses) per level. Bone Charges persist through portals and a maximum of 10 can be stored. Every 5th level reduces the time needed to gain a Bone Charge by 30 minutes.
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Once you purchase a Bone Shrine, you'll have a new UI element at the top left of your screen. It will start at 0 charges and then slowly accumulate new charges, up to a maximum of 10. You can level up the bone shrine by spending more bones on it at the Bone Trader. As you level it up, it will get charges faster, and each charge will work better.

When you use a charge, you get an immediate influx of food, wood, and metal. The amount you get will depend on the level of your bone shrine, your looting and efficiency modifiers, and your number of workers in each category.

The Bone Shrine uses the rules of improved auto-storage, even if you haven't unlocked that yet. It will purchase whatever storage you need, without using the build queue, and simply deduct the cost of the storage from the materials you gained.

# When to use it

The great thing about the bone shrine is that you can accumulate charges until you really need them. As such, you can accumulate charges while zone progress is good, and then spend them to get over humps. Any time you are thinking about farming maps for resources, or thinking about running Trimple of Doom, you can do the same thing with a bone charge, in instant time.

Try to adjust your rate of usage so that you never end up at the extremes of 0 or 10 bone charges. If you get to 10 bone charges and still aren't using them, they will stop accumulating, thus wasting the bonus that you could have had. That means you're waiting too long and should use them a little more often than you have been. On the flip side, if you get to 0 a lot, it means you are using them too fast and will have to wait for a new charge when you get to the next hump. In general, force yourself to use them a little more when you get up to 7-9 charges, and force yourself to be more stingy when you're down near 1-4 charges.

Usually one bone charge will get you over a hump, so try to use one at a time and spread them out. Sometimes, though, there is a reason to splurge on two or more at a time. For example, maybe you are trying to spend down to 0 in preparation for a Spire attempt. In this case, don't spend all of the charges instantly, back to back. Instead, wait a minute between each usage to spend the resources on housing and then to put the new trimps to work. That way, your second charge will be larger than the first one, and the third larger than the second.

Try not to use bone charges any time you are already one-shotting through a zone. In this situation, you can't get any faster at zone clearing, because you're already one-shotting. Moreover, if you wait until you clear another zone or two, you will get additional speedbooks, which will make you get from that bone charge than if you use it right now. So unless you are totally maxed out at 10 charges and just really need to clear a charge, don't use a charge while you are one-shotting.

Consider using extra charges when you are going for something unusual, something that is more important than normal zone progress. For example, if you are near the end of a Challenge2 run, it can be beneficial to use more charges than normal if it will push you over the edge and let you get one more layer of Challenge2 bonus. If you are preparing for your first Spire run, the extra resources can determine whether you succeed or fail in beating it with 10 lives. And completing any challenge can be a time to use a charge and push it over the hump.