Board Thread:Questions and Answers/@comment-2601:1C0:5C00:8169:11C3:B811:54B7:F893-20180204034739/@comment-25122955-20180204122731

It is called magic mixer that spawns various blockers every 2 or 3 moves. (Mostly 3 moves)

It is a blocker that hinder the progress to reach the goal, but magic mixers on some candy order levels with blocker orders must be kept because in those levels, magic mixer is the only way to get blockers on the orders.