Smart Fly is a passive item.
Effect
- Spawns an orbital fly whose behavior changes depending on whether or not Isaac has taken damage in the current room.
- The fly always deals 1.5 damage per tick or 22.5 damage per second on contact with enemies.
- Before Isaac takes damage, the fly serves as an orbital familiar, blocking enemy shots.
- After Isaac takes damage, this fly will seek out nearby enemies and attack them.
- Template:Transf
Notes
- Smart Fly does not take up one of the three orbital slots; it floats between two of the other orbitals.
Interactions
Duct Tape: Fly will stay in place when orbiting Isaac but will still pursue enemies.
In-game Footage
Seeds
PC CAKK GWMX (First floor treasure room)
PC YYH2 YJ4B (Treasure room adjacent to spawn)
PC ER9T 2RPF (First floor treasure room)
PS4 WV2E FB1R (First floor treasure room)
PS4 1ZTZ EC7A (First floor treasure room)
Switch 
396D QBP0 (First Golden Treasure Room)
 Fly Items
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 The Binding of Isaac: Rebirth
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