"Let me try something first. It'll lengthen how long I can sustain the lightness."

Alendi follows out the door, then jumps to the opposite edge of the roof. (Fill iron, tap pewter.) He starts tapping iron, emptying that bracelet of all its stored weight and making himself far heavier than any human is expected to be. After Yellow's wall collapses he jumps back and, falling slowly, says "I should be good to weigh nothing for a while now."