If I move Traveling Merchant to an occupied battlefield and use its ability to ready an exhausted Jinx Rebel, can the newly readied Jinx Rebel then move together with the Traveling Merchant to attack?

Ruling: No, the Jinx Rebel cannot move with the Traveling Merchant. The Merchant's move triggers only after it has already moved, so once that ability chain resolves, the showdown will begin.

Sequence:

• Traveling Merchant moves to the occupied battlefield
• Traveling Merchant's ability triggers after the move
• Jinx Rebel is readied by discarding a card
• Showdown begins (too late for Jinx Rebel to join)

Nuances:

• Units can only move together when they're moving at the same time and have the same destination