Cream

Void. The inside of creams mouth is a rift that sends matter to a random dimension. However if the user enters the mouth they are completely safe and additionally the stand can use an action to consume itself and become invisible and all matter the comes into contact is instantly destroyed this however causes the stand to be blind making it impossible to specifically target people. An action can be used to leave that form

Stand. As a stand it is invisible to everything except stand users and other stands and can phase through objects but once fully out of the view of the user it dematerialise'. It is immune to Wis, Int and cha based rolls and is also immune to disease's and poisons. The user can speak through the stand. 

Crashing earase. Cream when it's  consumed itself can go in a direction of the users choice which any creatures in that way must succeed a Dex save of 17+stands dex

Unarmed strike. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1 + 3) [bludgeoning] damage.