The suit of Daggers

A set of four daggers, stored, scattered, or held by different people in different places or locked away, they are never held by any one person or place at the start of a campaign, Unless the DM wishes it to be so.

The entire set together grants each dagger +3 and 1d4 necrotic, plus the subsequent traits and abilities specified by each dagger.

Only the Ace has the ability to stun a target, this is not shared with the other set pieces.

Alternative rule: Instead of the daggers being sperate pieces of a set, once all four daggers have been found and are held by a single creature they fuse into one dagger known as the Suit of Daggers, It has all benifits of the daggers including the Aces stun ability making it. 1d4 +3 +1d4 Necrotic with the chance to stun on a critical.

Jack of Daggers +1

Weapon (Dagger), Legendary. (requires attunement)

A simple Iron blade that Deals 1D4 Piercing damage.

Wrapped in brown leather with a bronze guard and pommel, the pommel contains a single blue gem in the center with the name "thomas Blad" etched in the bronze around it.

at your will the dagger changes forms between dagger and playing card, this ability is shared with the other daggers in the set when obtained.

Queen of Daggers +1 - Monks

Weapon (Dagger), Legendary. (requires attunement)

A beatiful smooth ivory dagger that holds a fine edge to it, the pommel is carved out of a single piece of quartz to resemble a queens crown. The Queen deals 1D4 Piercing damage

The Queen adds the ability for it and the other cards to return to their sheath once thrown.

you have a bonus of +1 to all attack and damage rolls made with the Queen.

King of Daggers +1 - Marsh

Weapon (Dagger), Legendary. (requires attunement)

Damage 1d4 Piercing

A royal purple Blade covered in detailed silver filligree, the handguard and pommel are made of gold and the hilt wrapped in red velvet. The King deals 1d4 Piercing

The King adds gleaming to it and all other cards, the daggers remain clean under all circumstances.

you have a bonus of +1 to all attack and damage rolls made with the King

Ace Of Daggers +1

Weapon (Dagger), Legendary. (requires attunement)

The blade of this dagger Is a deep midnight black, the guard and pommel are made of basic iron, carved into them are the symbols of the other daggers, A kings crown, A queen Crown, and a Jesters hat. The Ace Deals 1D4 Piercing damage as well as 1D4 Necrotic Damage

The Ace adds 1d4 necrotic damage to all other cards.

On a critical hit the Ace stuns the target creature until the end of it's next turn.