And a new preview saison is starting.

Source: Andrea Mengucci

Scheming Symmetry B

Sorcery
Choose two target players. Each of them searches their library for a card, then shuffles their library and puts that card on top of it.

If you do nothing the opponent will draw his card first but this can be negated by shuffling or extra draw on our turn. Can this card see some play when Imperial seal see almost 0 play ?

@Khahan Unfortunately probability is rarely intuitive.

The mathematical proof:

We consider 3 type of card a, b, c and a deck with Na + Nb + Nc = 60 copies of each card.
The probably of having exactly A + B + C = 7 in a hand of 7 is given by

P(A, B, C; 60) = comb(Na, A) * comb(Nb, B) * comb(Nc, C) / comb(60, 7)

By introducing comb(60 - Na, 7 - A) in the middle we obtain

P(A, B, C; 60) = [comb(Na, A) * comb(60 - Na, 7 - A) / comb(60, 7)] * [comb(Nb, B) * comb(Nc, C) / comb(60 - Na, 7 - A)]

We recognize the probability for 2 type of card and use C = 7 - A - B to obtain

P(A, B, 7 - A - B; 60) = P(A, 7 - A; 60) * P(B, 7 - A - B, 60 - A)

Wikipedia for more detail.

The interpretation is: For each new type of card you have to remove the all the copy of the previous type of card.

This is not easy, I had to redo the proof to convince myself there was an error in the spreadsheet.

@ChubbyRain Nice work.

I think there is a error in "Chance of Green card out of the remaining six cards", your results correspond to a population of 59 = (60 - 1 * Force) but it should be done with population of 56 = (60 - 4 * Force).

Everything else seems good for me.

@joshuabrooks I combined the list of edition of MTG Wiki with the data base of card of MTGJSON (used by Cockatrice), Un-set are excluded. I got a total of 18909 cards.

The number of set (with at least one new card) by year:

The number of new printing by year:

The year 2019 is ongoing so the number are incomplete.
There seem to have an increase in the number of new printing in the last few years.

They can play Spark Double so it is not completely absurd sarcasm. My bad.

@Shopsaholic It will be hard to hit four Karns with The Elderspell when there is only three versions of legendary Karn planewalkers.

The probme is that paying BB to destroy planewalkers when most of them cost 3 or 4 and have already use at least one of their abilities is a bit slow. And when they do not play planewalker, its a completely dead card.

There is 3 relevant challenges, and in the last one WAR is legal. April 13, April 20 and April 27.

The lack of good solution to Karn explain why he trusts the mtgo challenge top8 .

The solution is to play Karn first.

My point is, it is better to play null rod than Harsh mentor, and Karn than Haunting Wind.

@cuikui

Well the premise here is that people are likely to have a turn 1 Karn, turn 2 time vault lock.

So you can only deploy 1 mana ?

Force of will, Mental misstep on key, Pithing needle, Nature claim, Lighting bolt.
And soon Force of Negation and Force of Vigor.

@desolutionist If you have problem with your opponent activating artifact then just play null rod effect, like Karn.

@BlindTherapy If dreadbore was instant speed and cost R it would see play, but it is neither of the two.

Magmatic Sinkhole is the closest we have of that. But maybe not close enough to see play.

@Protoaddict Maybe the delve cost is too high for this to see play. But I think it is the best in is category

Bolt: weak creature, some planeswalker and player
StP: every creature
Dragon: some planeswalker and player
Magmatic Sinkhole: most creature and planeswalker

Also UR has hard time dealing with 4+ thougness creature (Eldrazi, Managorger Hydra). This card is a decent option against this creature without splashing white or black.

@Protoaddict Given the importance planewalker are taking in the format, hitting planewalker is almost as important has hitting creature.

Plus it is a mono red spell that fit direcly into existing shell without needing random Black splash.

Source

Magmatic Sinkhole 5R
Instant
Delve
Magmatic Sinkhole deals 5 damages to target creature or planeswalker.

Potentially a 5 damages Bolt for R, at instant speed. Look like something URx xerox want to fight the new planewalkers.
Is this a problem when we already play the two restricted delve spells ?

Most PO deck play around 16 artifacts, it will be hard to put all of them in the graveyard.

Source

Maybe this can be considered for deck that can replace all there basic by snow-basic, like mono W Eldrazi.

A replacement to Path to exil in the sidebord.

Because @ChubbyRain is waiting it

Plague Engineer 2B

Creature - Carrier

Deathtouch

As Plague Engineer enters the battlefield, choose a creature type.

Creatures of the chosen type your opponents control get -1/-1.

2/2

He answers the token generator like Mentor and Young pyro.
He weakens tribal deck like Human, Eldrazi etc
He can be a 1 for 1 answer to specific 1 toughtness creature like revoker.
He can attack.
He can chump block.

So which deck want him, Survival, UBx control ?

@Protoaddict The only vintage case I can think of is with Sphinx of the SteelWind.

@fsecco Cards like Pithing Needle, Sorcerous Spyglass and Phyrexian revoker are possible answers. They do not deal with the static abilities of WAR planewalkers but they have application outside of fighting planewalker.

Can we expect Time Walk and Time twister with suspend to complete the Power nine ?