London Powder?

Probability of finding a Bazaar with Serum Powder using Vancouver-Mulligan:
94.2% (fails every ~17 games)

Probability of finding a Bazaar with Serum Powder using London-Mulligan:
99.5% (fails every ~200 games)

Probability of finding a Bazaar without Serum Powder using London-Mulligan:
97.2% (fails every ~35 games)

Seeing those numbers it still feels obvious to run the powder, but there are things to consider:

1. In game 2/3 a necromancer doesn't only pray for bazaar, he also needs to hope to find plan b, usually an antihate and a land.
Keeping in mind dredge is a deck that's totally willing to mull to one, finding a Bazaar without using powder on mull to 3 cards is 92.2% (London mulligan).
On the other side, you'll get the odds of ~1:3 to find a bazaar with 4 cards in hand by activating powder ~33%, but are those random other 3 cards enough?
I would like to argue, its better to go down to 3 cards, and pick with 39,9% chance your bazaar and force+pitch/land+claim/misstep+dredger/unmask out of 7 to go along with it (or miss and get two rolls with 39,9% chance again).
Like mentioned, at this point we had the overall chance to find a bazaar by 92,2% anyway (no powder used).

2. While its true that villain will also have a better chance to find his hatepieces, he isn't really capable of utilizing the London mulligan as much as the necromancer does, after all a (e.g.) Leyline alone doesn't win the game.
Keeping this post math-themed: villains overall chance of Leyline with one mulligan is 63.9%, even with a mulligan to 5 cards its "only" 78,3% (compared to Vancouver: 61,1% / 72,8%)
I would like to argue our increased chance of finding a bazaar+ answer against hate makes up for that even without Powder.

3. The benefit of those 4 free slots:
While vintage became way faster in the last years dredge needed to adapted, especially winning game one is important, because the odds of winning decreases significantly in postboardgames (<30% per game(?).
Some people call it unfair, but cards like Force of Will and Unmask are necessary in "the new" meta to keep up with those fast builds like Storm, Outcome and even Shops,
but including those cards took a lot of space in the decklist, people even started to cut out the core engine cards to make room for Force and co. and push the high variance of dredge even further.
That's just wrong, in all formats, in all decks.

a little OT, a little old, but worth a watch for all who start tweaking on dredge.

Back to OT, my first assumption to Powder post 10th of April is unclear, I would consider it in large tourneys, but when it comes to Leagues, I got this paradox feeling a little more gamble could make dredge even more consistent..
Sadly, putting all those variables into an equation is too much for me ^^

last edited by oddseidank

I think you also have to consider the following:

• Is playing a non zero number of powders that isn't 4 potentially correct? The first one seems to give more of a percentage boost than the subsequent ones so it could be that 1 is the correct number, or even 2 or 3.

• For games 2-3, do you side the powders out for more hate/anti-hate, as putting another single piece of hate in your list could increase your percentages for an opening hand more than the 4 powders. Do you side out all 4 or is there another more optimal set up. Perhaps having 1 in hand in the course of a game comes up enough that it makes sense not have more than 2 post board or something like that.

• If you are Mulligan and powdering more frequently because of the rules change does that change the proportion of card types you'll need to build with to ensure you don't powder away to many, or perhaps because you can now "save" cards from powder does it open up what you can include.

That's totally right, I didn't even thought about playing <4 powder..
4 of powder definitely feels like a overkill in postbopardgames but finding the right number will need a lot of shuffletesting I guess...

Thinking about that, i kind of hope they just restrict the powder, so I don't have to think about it anymore..^^

Post board you aren't necessarily all-in for 1 and only 1 card, which is the only situation to play Serum Powder. Post board in a mirror you might consider a hand with either Bazaar or LotV a sneep and thus you would keep powder in.

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