"As If": This was added to the FAQ (v.1.7, March 2020) and then amended (v.1.8, October 2020). You can read the October ruling on the ArkhamDB rules page here. (I'm adding a hyperlink rather than retyping the rules in case in future the ruling is changed or amended - at that point, the rules page will be updated and all ArkhamDB FAQ entries will link to the correct ruling.)
Q: Double, Double vs Pay Day. Can the of Double, Double be initiated despite the end of the turn [from Pay Day]? If the turn immediately ends, does this mean even if Pay Day is played again, no actions were performed and the second pay day will grant no resources? A: Technically, you can use Double, Double to play a card that ends your turn twice, even though it ends your turn. Ending your turn doesn’t mean that you can’t trigger effects, it just means that you can no longer take actions. Since the second playing of the card doesn’t cost an action in this case, you can go ahead and resolve it even though your turn has ended. HOWEVER, due to the specific text on Pay Day, doing so would essentially do nothing. It says that you gain 1 resource for each action you performed this turn. Since you are playing it outside of your turn, you would gain 0 resources from the second copy of Pay Day (since the first copy ended your turn.)
Q: Double, Double vs The Painted World. I imagine The Painted World cannot be played twice by Double, Double, since it's removed from the game, but can the copied event be played twice? A: You can absolutely use Double, Double to play The Painted World twice. Note that it says you play it “as if it were in your hand,” so each time you played it in this way, you could choose a different event beneath Sefina Rousseau. Keep in mind this may not work with some events (such as events that become attachments or go to a specific play area) as you only actually have one physical copy of The Painted World to move around.
After you play an event, exhaust Double, Double: Play that event again as if it were in your hand.
- William Shakespeare, Macbeth
- Double, Double.
- The title of this card is a single word, doubled.
- The cost of this card is 2 x 2 = 4.
- The level of this card is also 4.
- Because it is exceptional, you pay double the XP to buy this card.
- Ironically, because it is exceptional, you can only have 1 in your deck.
- It has 2 commit icons on it.
- Not counting the duplicating coin in the middle, there are 16 (or 2^2^2) intact coins on the artwork.
- It lets you play any event twice.
- Aside from the keyword, the flavor text and rules text each take up 2 lines (4 total)
- It takes up an Arcane slot, of which you have 2.
- It is card 320 (2^5 x 10, note 2 x 5 = 10) in "The Circle Undone" cycle.
- It is in "Before the Black Throne", the Mythos pack containing the 8th Scenario this cycle.
- "The Circle Undone" is the 4th cycle of Arkham Horror LCG.
- The set symbol for "The Circle Undone" shows a severed figure 8, which contains 2 loops.
- The Rogue class symbol has 2 loops intertwined as well.
Alright enough of that. Clearly this is a Sefina Rousseau card. Get some extra value from The Painted World, a card that normally is restricted to three plays a game. Because Painted World becomes a copy of whatever card you play it as initially, I'm fairly sure you'd have to play that same event again if you Double, Double it, instead of getting to change targets, but that's okay. There's a lot of cards worth doubling: Drawn to the Flame, Sneak Attack, Backstab, Swift Reflexes, Narrow Escape, Hot Streak. Some events wont benefit well from this (Ward of Protection, Drawn to the Flame on lower player counts, Sure Gamble), but overall you'll probably get more than enough value out of it to make it worthwhile. Hot Streak is already a very powerful Sefina card when combined with Lola Santiago, so doubling it seems strong. Speaking of Lola and Hot Streak, Preston Fairmont likes this card as well. Preston relies on events to do anything (Intel Report, Decoy, Small Favor, "Look what I found!") so this could be very valuable action economy for him. Oh, and there's also Ace in the Hole.
That said I'm not fully sure how some of the timing would work there. Could you use it to discover four clues with "Look what I found!"? Could Sefina double Think on Your Feet and move two locations instead of one, or can she not double the card since she didn't draw another enemy? I'm not sure how the timing works here. Still, I'm sure there will be plenty of targets for this card. Two paragraphs.
We discovered a nifty little combo with this and Scrounge for Supplies. If you can draw both copies of Scrounge, you can double-play one to bring back the other Scrounge plus another card from your discard pile. Then you can repeat this every 1-2 turns to bring back cards from the discard at will. Of note, this combo costs no resources once the Double, Double is in play, and only one action each time you bring back the card (the same one action it would take to draw a card from your deck), although it uses up your Double, Double effect for the turn. The effect is potentially very strong, especially in the late game, but can only get back level 0 cards. Since Scrounge is a pretty good card anyways, it is a no-brainer for any investigator who will be taking Double, Double.
Currently the deck builder allows you to put two of these in a deck. Being fuzzy on the rules for 'exceptional' I did that. Yes I realize it means I've been cheating for quite a few scenarios but I just want to say that having two copies in play is the most glorious thing I've seen in any game so far :p