What if opponent accidentally look at hidden card

The player whose hidden card was seen chooses the remedy: they may leave the card as-is (opponent now knows what it is) or re-randomize it by swapping it with another random Hidden card from their hand, if one is available.

If re-randomizing: the revealed card returns to hand, a different Hidden card is placed face-down in the same spot, and play continues. If they have no other cards in hand, their only options are to leave it as-is or shuffle the revealed card back into the deck (losing it). The recycled rune used to Hide the card stays recycled no matter which remedy is chosen. This matches Tournament Rule 702.11 — the remedy decision belongs to the player whose private information was exposed.