When an aftershock is the last event in the deck (has happened in both of my games); which landforms are active for those 200 million years? Does activity behave like deciding player order in this case; thus using the active landforms from the previous card?
It has happened to me a lot of times too and I asked Phil Eklund directly:
Phil Eklund wrote:
Because each turn must have a non-aftershock to complete it, you will need to shuffle the deck and draw an extra card to end the turn if you run out of events (protozoroic events)