Crystallization

Crsytalization is a hazard being in form of sap or of freezing. In forms of sap, when a Pikmin gets hit by sap, they first get with sap on them getting only slower, but when hit again it turns into a trapping the Pikmin inside, Rock Pikmin can break the amber and free the Pikmin from inside. And in forms of freeze the Pikmin gets frozen into a ice block, which is much more slippery, and can be also broken by Rock Pikmin. Both can be stacked if a Pikmin is trapped in amber/frozen making the amber/ice block taking more Rock Pikmin to break in the max size of 5 Pikmin inside. Despite not letahl for the trapped Pikmin, those can be used by other enemies like the Skutterchuck and other enemies to which can crush Pikmin and kill them.