How do move triggers work in the case of opening up a chain?

Move triggers function like any other triggered ability in Riftbound: when the condition ("When I move" or similar) is met, the ability is placed on the chain.

According to RiftJudge FAQ #5749 and Rule 376.3, "when I move" is a triggered ability that creates a chain, which provides your opponent an opportunity to react.

How Move Triggers Work

1. Triggering: When a unit moves, the "When I move" condition is met.
2. Chain Creation: The triggered ability is placed on the chain as a pending item. This creates a Closed State (Rule 330.1).
3. Reaction Window: Because the chain is now open and in a closed state, players have an opportunity to play [Reaction] cards in response to the move trigger (Rule 325.1).
4. Resolution: Once all reactions have been played and both players pass, the chain resolves in LIFO (Last-In, First-Out) order.

Important Nuances

• Moving vs. Move Triggers: The act of moving itself is instantaneous and does not use the chain (Rule 424.3.c). You cannot react to the move itself. You are reacting to the triggered ability that occurs as a result of the move.
• Showdown Timing: If a move trigger occurs outside of a showdown, the chain must fully resolve before a showdown can begin (see RiftJudge FAQ #6117). A showdown can only begin during the cleanup phase if there is no existing chain.
• Simultaneous Triggers: If multiple triggers occur simultaneously (e.g., a move triggers an ability for both players), they are placed on the chain in turn order, with the active player's triggers going on first (Rule 376.3.b).