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“See how the dagger dances along my fingertips, see it spin. I have forgotten more ways to use this dagger than you can ever imagine."[PH:127]

Prerequisite: Rogue class

Daggermaster's Action (11th level): You can spend an action point to reroll one attack roll or damage roll you made using a dagger, instead of taking an extra action.

Dagger Precision (11th level): You can score critical hits with daggers on a roll of 18–20.

Dagger Advantage (16th level): When you score a critical hit with a dagger, the target grants combat advantage to you until the end of your next turn.

 Critical Opportunity Daggermaster Attack 11
Your first attack deals a critical wound, so you follow the attack with another strike.
 Encounter + Martial, Weapon
 Minor Action  Melee weapon
 Requirement: You must be wielding a dagger and have scored a critical hit with a dagger against an enemy during this turn.
 Target: The same creature you hit with a critical hit
 Attack: Dexterity vs. AC
 Hit: 3[W] + Dexterity modifier damage.

 Meditation of the Blade Daggermaster Utility 12
With a moment of concentration, you focus your will into the point of your blade.
 Daily + Martial, Weapon
 Minor Action  Personal
 Effect: Until the end of the encounter, your dagger’s damage die increases by one size.

 Deep Dagger Wound Daggermaster Attack 20
Your dagger springs forward, plunging deep into your foe.
 Daily + Martial, Weapon
 Standard Action  Melee weapon
 Requirement: You must be wielding a dagger.
 Target: One creature
 Attack: Dexterity vs. AC
 Hit: 4[W] + Dexterity modifier damage, and ongoing 10 damage (save ends). On a critical hit, ongoing 20 damage (save ends).
 Miss: 2[W] + Dexterity modifier damage, and no ongoing damage.