迷路苍蝇#365

Lost Fly is a passive item added in The Binding of Isaac: Afterbirth.

• Spawns a fly familiar that moves in a straight line and attaches itself to the first wall or obstacle it comes into contact within each room.
• The Lost Fly will then move around the room functionally similar to the Guts.
• If any enemies walk into its path, it will deal 7 contact damage per tick or 105 damage per second.
• Lost Fly deals 7 contact damage every 7 ticks, or 30 damage per second. Enemies near Lost Fly will target it instead of Isaac.
• Some enemies that do not normally give chase to Isaac, such as Mulligans, will chase after the Lost Fly if nearby it.
• If the obstacle it is attached to is destroyed, then it will continue rolling in the direction it was previously traveling until it meets another wall or obstacle.
• This item belongs to the Beelzebub set. Collecting three items from this set will transform Isaac into a giant humanoid fly.

• The fly will glow slightly in Curse of Darkness, making its position always visible.
• The name of the item is likely a reference to the maze-solving algorithm called the left-hand rule, which is based on walking forward and turning left as far as possible until you find an exit to the maze. Fly Items Items
• ???'s Only Friend
• Angry Fly
• BBF
• Best Bud
• Big Fan
• Bot Fly
• Brown Nugget
• Distant Admiration
• Forever alone
• Friend Zone
• Fruity Plum
• Halo of Flies
• Hive Mind
• Infestation
• Jar of Flies
• Lost Fly
• The Mulligan
• Obsessed Fan
• Papa Fly
• Psy Fly
• Skatole
• Smart Fly
• The Swarm The Binding of Isaac: Rebirth
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