Different coloured portals on spawn room?

[T W I T C H Y]

So I got a super good build and did a victory lap, now during this run, I am seeing two portals (at the moment, blue and orange) spawn where you do. I would go through them and see for myself, but im trying to unlock something specific.

Anyone see these before/know what they do?

[Lusontrix]

Is a item, i think the names is card reading, At the beginning of floors spawn 2 portals , the red one teleports you to the boss room , the blue one to the secret room and the yellow to the treasure room.