What is that for? Is it a start player marker? And i've noticed it is on some of the cards, does that mean you can use the ability of the card during any phase or all phases? (pardon me i can't recall the card or have a picture of the marker) I hope I'm making sense here.
The Token: On the back of the rulebook, the Phases (and sub-events) are listed in order. You can use that token to mark what phase you are currently in as a reminder.
The Icon: That is the TRIBA icon. When you see that on various cards, it means it triggers at the beginning of each phase when you are activating that phases icons