If I've understood the rules correctly;
1) Asset cards are played from a players hand and stay in play (on the table) for the rest of the game.
2) Skill cards are played from a players hand at the time a skill test is undertaken and then go to the discard pile.
My question is; Do Event cards act like Asset cards (stay in play), or Skill cards (one-off usage)?
I've got an event card called Ward of Protection which says you must play it when you draw a non-weakness treachery card to cancel the card's effect and then take 1 damage. That sounds like a one-off usage (like a skill card), but it also has the wildcard symbol (?) on it - does this mean the card stays in play to add to any further skill checks in the game?