Ace of Hearts is a rose gold amulet shaped like a heart.

Aces High

While attuned, if an ally is actively wielding another Ace weapon/item (Ace of Spades, Ace of Clubs or Ace of Diamond's) this item, the Ace of Hearts, grants that ally (or allies) advantage on all their attack rolls. 

Gambler's Fervor

Ace of Hearts allows its wearer to use a bonus action to heal any TWO creatures 10hp each. This costs 1 of the items 3 charges (which are replenished at dawn). This healing ability cannot be used un the same creature twice if only once charge is consumed (i.e. if you spend 1 charge you cannot heal Creature A 20HP, you can heal creature A 10 HP and Creature B 10 HP then spend another charge to heal each of them again if desired.  

Luck of the Draw

If all 4 Ace weapons/items are in use by allied creatures and are within 50 feet of each other and all are being used in combat roll 1d4.

For the duration of this encounter, if the result is 

• 1 - The Ace of Clubs does and additional 2d6 bludgeoning damage when attacking. 
• 2 - The Ace of Spades can be used to make one additional attack per round as a bonus action. 
• 3 - The force shield created by the Ace of Diamonds lasts 2 rounds instead of 1. 
• 4 - Charges expended by the Ace of Hearts can heal 15HP per creature instead of 10 and up to 3 creatures can be healed instead of 2.

Notes: Cannot be attuned to a creature that is attuned to another "Ace" weapon or item