This rainbow twist is a purple spiral-shaped candy with white, yellow, green and blue twisted edges that takes five hits to destroy directly, or by destroying a one-layered rainbow twist connected to it.
Five-layered Rainbow Twists are immovable blockers that occupies only one space. These blockers can be destroyed by an adjacent match or a special candies' effects that touches it. These blockers need five hits to destroy, though they can be destroyed along with the rest of the chain they are connected to if a one-layered rainbow twist in that chain is destroyed.
Here is the difficulty of destroying a Five-layered Rainbow Twist: