Vigor Refiner

"'A simple upgrader that looks it can defend your base, but it can't. Don't let that disappoint you,'"

Overview
The Vigor Refiner is within the trilogy of the Valor Enhancer and Arcane Enchanter.

Trivia

 * The Vigor Refiner is within a trilogy, with two other upgraders, the Valor Enhancer, and the Arcane Enchanter.