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I plan to have a variety of features in this mod, but for now, I have:
Silver ingots: like gold, they occur below -64 and get more common below -256. They are more common than gold. For now, they are useful only for silver conduits.
Conduits: can carry power, which goes from 0 to 255. Copper conduits are produced by crafting five copper ingots in a cross. Silver and gold conduits are craftable by surrounding eight conduits around the respective ingot. There's also a secret conduit included: try finding its recipe! Better conduits lose less power per node.
Power blocks: They give 255 power to surrounding conduits. Simple.
Mini-hakkero: Marisa's signature weapon. Four steel ingots at the corners, four mese blocks at the edges, and a wooden plank in the center. Diamond blocks can also be used in place of mese, but you cannot mix and match.
To shoot a master spark out of it, place it and surround it with four mese or diamond blocks at the sides (you can mix and match here). The mini-hakkero will turn into a log.
While I wait for certain API changes, feel free to suggest what I should add.