This card seems really good, the only drawback is that it takes the coveted mystic accessory slot.

First up: It's dead cheap. Cost 2 is very reasonable for the resource starved class and for the effects it's a bargain. 2xp for 2 copies helps as well, even if it's Unique. Since it's level 1 you can even take it in off-class Mystics, which might be very interesting in something like a Guardian who isn't using the accessory slot as much and will have no problem defeating enemies.

The first effect is why you are buying this card, getting rid of Acolytes, Wizards of the Order and the like out of the discard pile for the scenario and getting yourself more Arcane slots for the privilege is great. Is it worth using over Holy Rosary or St. Hubert's Key? Hard to say, I'm keen to play around with this one though.

I was really looking for new cards using exile mechanic and I'm not disappointed with this one. It's cheap, fast, just one XP, so great value there and can be returned to deck with Déjà Vu for free for next scenario.

Just fail all skill tests, get value out of them (for example using "Look what I found!", Oops!, don't care about fails when Drawing Thin used) and still have 3 more actions (assuming all actions required skill tests).

It can be played for another investigator without location restriction which sounds a bit broken and can be life saving if someone failed miserably skill tests when fighting Elite enemy.

Lifeline can be even more beneficial for Stella Clark - in the most extreme scenario, she's failing 3 skill tests, then fails extra action's skill test coming from her signature ability to finally get 4 extra actions from Lifeline.

The only thing you have to care about when playing this card is to make sure your actions require skill tests and the fail effects are not too harsh.

I'd say for it to be worth 4XP you need to trigger about at least 2 effects, more likely 3.

So how can you achieve this ?

• Evade every one with a 5 investigator (Finn even if he can't take it, Winifred, Kymani...) .
• Investigate with Trish's ability.
• Pay and throw a Cunning Distraction with Preston !
• Just play with other investigators that can evade and maybe synchronize your Clean Sneak copies.

Just be sure to have one extra action to move out of the location after you played this card unless a guardian is coming to kill them. (Blur is pretty usefull for that but Rogues don't lack more actions in general...)

EDIT : Overall this is a pretty bad card I would say.
If we compare this card to Cryptic Research, we can see the difference between Rogues and Seekers in the game :p For the same cost and xp, Cryptic Research already does 3 effects (three times "draw 1 card" to allow the comparison with Clean Sneak), to anyone and you don't need to evade 2-3 enemies beforehand ! You pay for the versatility of effect of course but you need to work much harder for an overall lesser result sadly... :/

This is very nice for every 3 Roguish Investigators out there (Finn, Winifred, Skids, Rita and maybe Jenny) ! It could also be very good for Kymani to deal with Elite enemies...

• Now you fight with a pretty comfortable 5 (maybe 6 or more with Lonnie Ritter and any gun).
• It comboes very well with Stealth (3) and Kymani's ability to "kill by evading".
• It comboes very well with .25 Automatic (2) to deal 4 damages in 1 action (and 3 tests). Just Swift Reload afterward !
• This is a better Sharpshooter but hey, you could also run both so you Fight with super high numbers if you want to oversucceed ! ;)
• Finally, don't forget the Parley action, sometimes relevant if it's not a test and/or if you bought some Fine Clothes !

This is fake Dilemma card, I think. It seems we can choose one of two choices as the meaning of Dilemma. In practice, one choice commonly make no game change state, so we're compelled to resolve one effect due to "must" rule.

Predator or Prey, however, has really high potential. It is the first player card that forces massive elite enemy moving to desired location. Now we can play Extracurricular Activity infinitely. Note that it's not hard to do, since we can easily draw Predator or Prey via Resource or Katja when we want.