Beelzebub is a transformation in The Binding of Isaac.
Obtained by acquiring any 3 items with the fly tag.
Grants Isaac flight and converts small enemy flies into Blue Flies.
Larger enemy flies such as Boom Flies, Pooters, Suckers, Moters, will become permanently charmed and follow you between rooms.
This page shows information as of the latest Repentance release.
To see latest up-to date information about this transformation for the new Repentance+ (Online Co-op) DLC, check this page instead.