SIGILBOUND — Four Bindings

Four titanic ink spirits rise, and you hold the only pen that answers them. Draw warding sigils with your finger — a ring, a bolt, a coiling spiral — and your stroke ignites and slams into the thing in front of you. Twelve phases teach five rules one at a time: trace what you are shown, answer a blow with the right kind of mark, chain two or three sigils before it lands, mirror a glyph shown backwards, and refuse the corrupted marks that must never be drawn. The last phase asks for all of it at once.