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When you planeswalk to Norn's Seedcore, chaos ensues.
Whenever chaos ensues, reveal cards from the top of your planar deck until you reveal a plane card. Planeswalk to it, except don't planeswalk away from any plane. Put the rest of the revealed cards on the bottom of your planar deck in any order.
If a player rolls {CHAOS}, chaos ensues and all chaos abilities will trigger. The player may put those abilities on the stack in any order.
The next time a player planeswalks, they planeswalk away from all face-up planes. Their owners’ put them on the bottom of their planar decks in an order of their choice. This order isn’t revealed to other players.
Until a player planeswalks, the game will continue on multiple planes. The abilities of all face-up plane cards can affect the game.