You can slowly turn everything in a maximum range of 10 km into a dark ink-like substance. The smaller your range the faster everything around you turns, while at the maximum range, it would take an entire day. You can animate and control this ink-like substance that corrodes and turns anything it touches into more of itself. You can animate corpses, rubble, and so on. Though if it's a Parahuman you cannot use their powers even if you control their corpses. Your Ink can control its state, from being harder than steel to more fluid than water.