Ace of Shields is a consumable in The Forbidden Suits, a mod for The Binding of Isaac.

Turns all pickups in the current room into monsters, then applies a permanent charm effect to all monsters in the room, turning them into friendly companions that assist Isaac until they die.
• Charmed enemies have their health reduced to about 30%, but gain more on later floors.

The following special synergies and interactions for Ace of Shields have been documented.

* Note that not all possible synergies and interactions are listed here.

This item is a reference to a five-suit deck of cards known as "The Deck of Shields".

• Download The Forbidden Suits from the Steam Workshop.