Avalon: The Riven Veil · Board game rules
When is a region tile flipped over?
Quick answer
A region tile is flipped face up when a Lord explores an unexplored region during the Preparation Phase. [p.14 — Exploring the Mist]
Details
Region tiles start face down during setup and remain face down until exploration occurs. A region becomes explored when one of three conditions is met: when you deploy your Lord to an unexplored region, when you move your Lord to an unexplored region, or at the start of your turn if your Lord is already in an unexplored region. [p.14 — Exploring the Mist]
When exploration happens, Step 1 of the exploration process is to flip the region tile face up to reveal it. [p.14 — Exploring the Mist] This reveals the region's terrain type and the exploration rewards available in that region.
Watch out: Only Lords can trigger exploration—moving or deploying non-Lord units (Warriors, Champions, or Mythical Beasts) into an unexplored region does not flip the tile. Units in unexplored regions provide no strength and cannot move out until the region is explored by a Lord. [p.13 — Unexplored Region]