Boiling Rock Prison

Common · Land

Pick rating

4.6WeakRank 211 of 281

Observed strength

54.4%Rank 173 of 279 by win rate, card in hand · set average: 56.2%

How are these measures computed?

Pick rating. The pick rating estimates what a card is worth when you choose it, before there are results: it combines several signals (expert evaluations, the choices of strong players, characteristics of the card such as its cost and rarity) and was tuned on the results of decks of strong players. It is for comparing cards while you draft.

Observed strength. The observed strength is the win rate of the games in which the card was in hand at some point (opening hand or drawn), from hundreds of thousands of real games of online draft players since the set came out. The rank compares the cards seen in at least 1,000 games. It does not correct for the strength of the deck the card is played in, and a result stays uncertain for a card that is played little (about 1.6 points of margin at 1,000 games).

A solid playable that rarely gets cut (4.6/10).

Why. A black-red dual that enters tapped, with a useful exit: for four mana you tap it, sacrifice it, and draw a card. It smooths your colours without being a dead card late in the game.

Risks. It enters tapped, which costs tempo, and the draw is only relevant late. Outside those two colours it is useless.

In the draft. Take it if you are black-red, mid to late in a pack. Otherwise skip it; it is never more than a good playable.

Win rate of the card

Percentage of games won by the decks that play this card, depending on when it shows up, from the real games of the set.

Card in hand at some point in the game54.4 %(set average : 56.2 %)
Card in the opening hand55.5 %(set average : 55.4 %)
Card drawn during the game53.6 %(set average : 56.8 %)

Gap when it is drawn, against the games where it is not : +1.4 win-rate points

How often it ends up in the deck once drafted by a strong player (not a win rate)50.0 %(set average : 61.0 %)

Its place in the set

  • Common: rank 58 of 91
  • Colourless: rank 23 of 31
  • Cost 0: rank 14 of 19
  • Average pick: 9.4 (1 = taken first from a pack; the lower the number, the earlier players choose it)

Win rate by colour pair

Percentage of games won by the decks of each pair that play the card, with the number of games. The pairs are the two main colors of the deck: when the card has a color outside the pair, the deck plays it as a splash (marked “splash”). A pair that has an archetype in this set leads to its guide.

12,728 games54.3 %(all pairs : 53.8 %)
4,831 games53.1 %(all pairs : 53.8 %)
3,121 games55.9 %(all pairs : 53.8 %)
2,817 games53.6 %(all pairs : 53.8 %)
1,960 games55.9 %(all pairs : 53.8 %)
1,742 games56.9 %(all pairs : 53.8 %)
1,700 games49.4 %(all pairs : 53.8 %)
1,646 games53.1 %(all pairs : 53.8 %)

Win rate: strong players and all players

Percentage of games won when the card is in hand; strong players are those ranked diamond or mythic online.

Strong players (diamond and mythic ranks), card in hand54.7 %· 4,915 games
All players, card in hand54.9 %· 17,852 games

Win rate on the play and on the draw

Games on the play (the deck holds the card)56.4 %(set average : 59.1 %)
Games on the draw, so drawing from the first turn (the deck holds the card)51.2 %(set average : 52.9 %)

Win rate by number of copies in the deck

  • 1 copy53.6 % · 34,371 games
  • 2 copies55.2 % · 4,496 games

Win rate since the set came out (card in hand)

  • First two weeks55.1 % · 9,574 games
  • Next two weeks54.2 % · 4,595 games
  • After that55.1 % · 3,683 games

Win rate alongside other cards

Win rate of the decks that play both cards, compared with the one you would expect from what each card gets alone. At least 150 games together.

Cards it wins more with

Cards it wins less with

Other cards of the same cost and colours

  • Abandoned Air Temple

    30. Abandoned Air Temple

    7.4
  • Ba Sing Se

    44. Ba Sing Se

    7.0
  • Secret Tunnel

    61. Secret Tunnel

    6.7
  • Realm of Koh

    75. Realm of Koh

    6.5

Intrinsic ratings: they do not take into account the cards you have already picked. They matter most for the first pick of the first pack.