So that is 30 cards, 2 actions
Crossroads ->58 cards, 4 actions
Crossroads ->114 cards, 3 actions
Crossroads ->226 cards, 2 actions
Crossroads ->450 cards, 1 action
Necropolis, Crossroads ->896 cards, 1 action
Necropolis, Crossroads ->1788 cards, 1 action
Crossroads -> 3574 cards, 0 actions (1787 of the cards are Victory cards).
However, we can start with 33 cards, since the opponent bought a Mission and played 3 more council rooms.