2.2.5.a The version of an object is a code of the form: LLL-NNN-L(-NNNN), where the L's are letters and the N's are numbers.
2.2.5.b The first three letter correspond to the set release. The list of sets and their code is: Beyond the Gates (BTG).
2.2.5.c The next three numbers are the number of the card in the set.
2.2.5.d The single letter is the rarity of the card, which can be C for commom (
), R for rare (), F for faction-shifted (
), or U for unique (
).
2.2.5.e Unique cards have four extra numbers.
2.2.5.f Each unique card has a different version number.
2.2.5.g In the Beyond the Gates set, different cards may share the same number if one comes from the Kickstarter release and the other one from the Retail release. They may be distinguished by a stylized A on the bottom left of the card.