What's the Point of This Attack Power?

After checking his equipment, Ethan turned his attention to the skill books...

[Heavy Strike]: Consumes 80 Mana. Strikes the target with the hilt of the weapon, dealing 160% Physical Damage and silencing the target for 3 seconds. Targets under silence cannot cast skills. Cooldown: 1 minute. Class Requirement: Assassin.

[Precision Break]: Consumes 100 Mana. Delivers a precise strike to the target's weak point, ignoring Defense and guaranteeing a Critical Hit. Cooldown: 3 minutes. Class Requirement: Assassin.

"Holy shit, both of these skills dropped? I can finally play like a real Assassin instead of just relying on poison!" Ethan exclaimed, feeling an unexpected sense of relief.

Since entering Oracle, he had been fighting without ever truly dealing direct damage. With his newly acquired gear and these two offensive skills, he could finally deal damage like a proper Assassin.