Take a sip each time King Silas does something not in the best interests of Gilboa
Drain the glass if a higher power (God, Death) told him to do the opposite
Take a sip for each thing that would have been resolved in the second season
Take a sip and have a stomach pump/will ready each time you see a butterfly
Drain the glass if said butterflies are part of a "crowning*
Raise your glass, cheer and drink in honor of the palace guards when they appear
Drain your glass if their actions end up affecting the main plot.
Punch the person and steal their drink if they make a remark that the rocket launcher that David used against the Goliath tank was a SLING
Take a sip each time an obvious Biblical reference gets through the haze
If you can spot one that isn't that obvious through the haze, everyone else drains their glass
Take a sip each time someone references the fact that the power has gone out
If any of your drinking buddies (friends don't let friends drink alone) thinks that Abadon would have made a better king than Silas, take a drink if you agree.
Take a sip each time Andrew Cross does something odd
Finish the drink if it ends up interfering with the A-plot.
In order to air theories about what Andrew Cross did to get himself exiled, proposer must drain a glass.