Lord of the Pit's icon resembles the Cross of St. Peter.
The wings granted by Lord of the Pit are identical to Azazel's wings.
The item is a reference to a 'Magic: The Gathering' card of the same name featuring a black-winged demonic creature on it, which is the appearance Isaac assumes upon picking up the item.
"The Lord of the Gap" is a name commonly given to Belphegor, the demon of sloth and invention.
not applied until the next time Isaac's speed stat is updated).
This item belongs to the 
Leviathan set. Collecting three items from this set will transform Isaac into Leviathan.
Azazel's wings.
The Binding of Isaac: Rebirth
