The Beasts of the Bay follow the Pacific Format 93/94 deck construction and play rules.
The Pacific Format rules are very similar to Eternal Central's Old School 93/94 Rules. However, the Pacific Format has some differences. They are as follows:
(1) Recall is Unrestricted.
(2) Shahrazad is Restricted.
(3) A deck may contain any number of the card Plague Rats (i.e. you can play more than 4 copies)
Otherwise almost all the rules are the same as Eternal Central.
Note that the Pacific Format uses the same card errata as Eternal Central. Also note that, under PAC and EC rules, the controller of a dexterity card may rearrange any number of creatures/permanents on the battlefield before flipping it.
How not to flip a Falling Star