Effect updates and description changes can be seen here.
As such, it's highly recommended to only use this when you have more than 1 monster on the board, or the boost gets wasted. It's a good bonus for any monster ready to attack, being able to deal out more DMG and able to have more chance of survival.
In the late game, you can follow this up with an Overheat to deal 1 more DMG to all enemy monsters.
- Ultimate Power (by Diamaincrah)