Can I move Treasure Hunter to hand to activate its effect to get a Gold?

To answer your question: No, simply moving Treasure Hunter to your hand does not activate its effect.

Here is the breakdown of why this is the case:

1. The Trigger Condition

Treasure Hunter's ability reads: "When I move, play a Gold gear token exhausted." According to Rule 420.1, moving is explicitly defined as a "Game Object moving between two Locations on The Board."

2. Location vs. Zone

In Riftbound, the "Board" consists only of battlefields and bases. Moving a card from a board zone (a battlefield or base) to a non-board zone (your hand, trash, or deck) is considered changing zones, not "moving" in the context of the rules.

Because the card is leaving the board entirely, it is not performing the specific "Move" action required to satisfy the condition of its triggered ability.

3. Summary

• "Moving" (Rule 420.1) only occurs between board locations.
• "Changing Zones" (e.g., returning to hand) is a different game event.
• Because the trigger condition "When I move" is not met when the unit returns to your hand, the ability will not trigger.