Solidify Mushroom

The Solidify Mushroom is a power-up that makes its first true appearence in Ghost rage. It is only found in Boo House levels.

Power
When touched, the Solidfy Mushroom grants the user to throw a liquid ball at an enemy. If it hits a Boo, it will give them a solid form, allowing them to be jumped on.

Gigabyte Gaming Brawl 2015
The Solidfy Mushroom technically makes its first appearence in Gigabyte Gaming Brawl 2015 as an item. It allows players to throw liquid balls at opponent, which cause them to be heavier and go slower.

Ghost rage
The Solidfy Mushroom makes its first official appearence in Ghost Rage. It is used to defeat Boos and bosses.