Psy Fly is a familiar in The Binding of Isaac, added in the Repentance DLC.

Spawns an orbital fly familiar that rapidly chases and blocks enemy shots.

After blocking a certain amount of shots, it enters a shot cooldown period where it only orbits around Isaac, but can still block shots.

The familiar deals 1 damage per tick (15 per second).

This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.

This item contributes towards the Beelzebub transformation. Collecting 3 items from this set will grant Isaac flight, converts small enemy flies into Blue Flies, and permanently charms larger enemy flies.

Psy Fly can be found in the following item pools:

The following tags are applied to this item:

The following special synergies and interactions for Psy Fly have been documented.

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

Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.

Psy Fly

• Fly familiar that moves rapidly to block most enemy shots that come close to Isaac
• Enters a brief cooldown period after blocking enough shots
• Abyss: x1 homing shield locust 2x Isaac's damage

• Check out the item description on the external Isaac Wiki.