- Q: Can I use Dumb Luck on an enemy that hasn't come from the encounter deck, such as Serpents of Yig or Mob Enforcer? A: Dumb Luck can only return a card to the deck it came from. This is important because it means you can't use Dumb Luck on a monster that comes from a player's deck, the effect would just fizzle.
행운.
신속. 당신이 정예가 아닌 적을 대상으로 한 회피 시도에서 난이도보다 2 이하의 차이로 능력 테스트에 실패한 후 플레이합니다.
그 적을 조우 덱 맨 위에 놓습니다.

- Dumb Luck (2) Stella Clark #25
Dumb Luck’s usefulness seems really limited, but it might have use for your non-combat investigator. You have to evade and fail against a non-elite enemy, but not failing too hard. Then after you used this card, it will come back again next round.
In solo, maybe you can send this to the encounter deck, and then dont have to worry about which of the new encounter card will mess up your day. If the enemy is really tough, and if you have Alyssa Graham, by accepting 1 doom you can send the enemy to the bottom instead.
In multiplayer if you plan ahead and have your leading investigator be a combat orientated investigator, this could work well. You would know it is coming, so the investigator can get his or her weapon or other assets out, preparing to murder this upcoming enemy. Ambush would be a really good combo here as well.
If you dont use it for the card effect, this card could replace Manual Dexterity for the same 2, minus the card draw. But it will be more flexible when you absolutely need this enemy gone for the round.