Would the Pokemon's base type become Stellar? Obviously Stellar Tera uses the defensive properties of the base type, so if Libero or Protean makes the base type Stellar, what would the defensive properties be?
Libero and Protean do not work when the user is Terastallized. In terms of Stellar, this means they will retain the defensive properties of whatever type they had before Terastallizing.
Libero (Bulbapedia) Protean (Bulbapedia) Stellar (Bulbapedia)
