Chrysalis Queue

Every row clear evolves your active piece, but not the reserve. Keep the right old shape to release four cocoon rows before five placements run out. Tap an anchor, rotate, then Place shape. Swap reserve once before each placement. A row clear changes D to L, L to T, T to I, and I to T. The held piece stays unchanged. Rows clear in place with no gravity. Only the original four marked rows count; clearing the empty top row or repeating a cleared row cannot farm progress. Undo restores the prior shape and reserve.