An errata sheet is definitely not a usual part of a book.
Mainly an errata expansion: recosted some units and changed others slightly.
The compilation was produced by hand and many errata and omissions were later discovered.
The use of errata also contributes to a steep learning curve, since players need to be aware of the current meta-game at all times.
The legalization of the website increased the motivation of artists and volunteers to send it lyrics and lyrics errata.
Cards that previously had a lifelink-like ability have been issued further errata to return them to their original functionality.
The last errata came just in time to be inserted.
There is virtually no change in the text, such change being limited to correcting errata.
