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Calculated via the hypergeometric law on
40 cards.
Adjusted for active Pot(s) on
40 cards.
Simulate
Open a key card
82% → 82.7% (+0.8)
Negligible gain
Small World stuck in hand (no monster to reveal)
1.7%
Low risk
When you draw Small World (12.2%)
Useful 14.8%
Redundant 73.8%
Dead end 11.5%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 86.2%
12.5% → 18.4%
+5.9
12.5% → 18.4%
+5.9
12.5% → 17.7%
+5.2
Open a key card
82% → 83.7% (+1.8)
Negligible gain
Small World stuck in hand (no monster to reveal)
1.6%
Low risk
When you draw Small World (12.5%)
Useful 14.4%
Redundant 75.2%
Dead end 10.4%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 87.1%
12.5% → 18.9%
+6.4
12.5% → 18.9%
+6.4
12.5% → 18.3%
+5.8
Open a key card
82% → 83.3% (+1.4)
Negligible gain
Small World stuck in hand (no monster to reveal)
3.2%
Low risk
When you draw Small World (22.6%)
Useful 14.6%
Redundant 73.5%
Dead end 11.9%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 85.2%
12.5% → 23.3%
+10.8
12.5% → 23.3%
+10.8
12.5% → 22.1%
+9.6
Open a key card
82% → 85.3% (+3.3)
Small gain
Small World stuck in hand (no monster to reveal)
3%
Low risk
When you draw Small World (23.7%)
Useful 13.9%
Redundant 75.5%
Dead end 10.5%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 87.1%
12.5% → 24.8%
+12.3
12.5% → 24.8%
+12.3
12.5% → 23.5%
+11
Open a key card
82% → 83.7% (+1.7)
Negligible gain
Small World stuck in hand (no monster to reveal)
4.7%
Low risk
When you draw Small World (31.6%)
Useful 14.6%
Redundant 73.1%
Dead end 12.7%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 84.3%
12.5% → 27.4%
+14.9
12.5% → 27.4%
+14.9
12.5% → 25.7%
+13.2
Open a key card
82% → 86.6% (+4.7)
Small gain
Small World stuck in hand (no monster to reveal)
4.1%
Low risk
When you draw Small World (33.8%)
Useful 13.9%
Redundant 76%
Dead end 10.1%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 87.1%
12.5% → 30.2%
+17.7
12.5% → 30.2%
+17.7
12.5% → 28.3%
+15.8
Open a key card
87.6% → 88.5% (+0.9)
Negligible gain
Small World stuck in hand (no monster to reveal)
1.2%
Low risk
When you draw Small World (14.6%)
Useful 11.6%
Redundant 82.2%
Dead end 6.2%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 91.9%
15% → 23%
+8
15% → 23%
+8
15% → 22.2%
+7.2
Open a key card
87.6% → 89.3% (+1.7)
Negligible gain
Small World stuck in hand (no monster to reveal)
1.1%
Low risk
When you draw Small World (15%)
Useful 11.3%
Redundant 82.7%
Dead end 6%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 92.6%
15% → 23.7%
+8.7
15% → 23.7%
+8.7
15% → 22.8%
+7.8
Open a key card
87.6% → 89.1% (+1.5)
Negligible gain
Small World stuck in hand (no monster to reveal)
2.3%
Low risk
When you draw Small World (26.8%)
Useful 11.9%
Redundant 81.3%
Dead end 6.7%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 91.2%
15% → 29.4%
+14.4
15% → 29.4%
+14.4
15% → 28%
+13
Open a key card
87.6% → 90.7% (+3.1)
Small gain
Small World stuck in hand (no monster to reveal)
2%
Low risk
When you draw Small World (28.1%)
Useful 11%
Redundant 83.3%
Dead end 5.7%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 92.6%
15% → 31.3%
+16.3
15% → 31.3%
+16.3
15% → 29.8%
+14.8
Open a key card
87.6% → 89.6% (+1.9)
Negligible gain
Small World stuck in hand (no monster to reveal)
3.3%
Low risk
When you draw Small World (37%)
Useful 11.9%
Redundant 81.1%
Dead end 7%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 90.5%
15% → 34.7%
+19.7
15% → 34.7%
+19.7
15% → 32.7%
+17.7
Open a key card
87.6% → 91.9% (+4.3)
Small gain
Small World stuck in hand (no monster to reveal)
2.7%
Low risk
When you draw Small World (39.4%)
Useful 10.9%
Redundant 84%
Dead end 5.3%
Rarely useful
Launchers (not key cards) : 2 · Small World playable when drawn : 92.6%
15% → 38%
+23
15% → 38%
+23
15% → 35.9%
+20.9
Key cards = every monster except hand traps — click the cards above to choose them.
Cheat sheet (PNG)
Detailed analysis
Simulate
Open a key card
82% → 81% (-0.9)
Dilutes the deck
Allure unplayable when drawn (no DARK monster to banish)
85.2%
High risk
When you draw Allure of Darkness (12.2%)
Useful 0.8%
Redundant 73.8%
Whiff 0.8%
Disaster 24.6%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
Open a key card
82% → 82% (+0.1)
Negligible gain
Allure unplayable when drawn (no DARK monster to banish)
84.8%
High risk
When you draw Allure of Darkness (12.5%)
Useful 0.8%
Redundant 75.2%
Whiff 0.8%
Disaster 23.2%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
33.8% → 34%
+0.2
33.8% → 34%
+0.2
12.5% → 12.6%
+0.1
Open a key card
82% → 80.1% (-1.8)
Dilutes the deck
Allure unplayable when drawn (no DARK monster to banish)
85.4%
High risk
When you draw Allure of Darkness (22.6%)
Useful 0.4%
Redundant 73.5%
Whiff 0.9%
Disaster 25.2%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
Open a key card
82% → 82% (+0.1)
Negligible gain
Allure unplayable when drawn (no DARK monster to banish)
84.4%
High risk
When you draw Allure of Darkness (23.7%)
Useful 0.4%
Redundant 75.5%
Whiff 0.8%
Disaster 22.8%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
33.8% → 34.1%
+0.4
33.8% → 34.1%
+0.4
12.5% → 12.7%
+0.2
Open a key card
82% → 79.2% (-2.8)
Dilutes the deck
Allure unplayable when drawn (no DARK monster to banish)
85.8%
High risk
When you draw Allure of Darkness (31.6%)
Useful 0.3%
Redundant 73.1%
Whiff 0.9%
Disaster 25.6%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
Open a key card
82% → 82.1% (+0.1)
Negligible gain
Allure unplayable when drawn (no DARK monster to banish)
84.3%
High risk
When you draw Allure of Darkness (33.8%)
Useful 0.3%
Redundant 76%
Whiff 0.9%
Disaster 22.5%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
33.8% → 34.3%
+0.6
33.8% → 34.3%
+0.6
12.5% → 12.7%
+0.2
Open a key card
87.6% → 86.8% (-0.8)
Dilutes the deck
Allure unplayable when drawn (no DARK monster to banish)
82.9%
High risk
When you draw Allure of Darkness (14.6%)
Useful 0%
Redundant 82.2%
Whiff 0.7%
Disaster 17.1%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
Open a key card
87.6% → 87.7% (0)
Negligible gain
Allure unplayable when drawn (no DARK monster to banish)
82%
High risk
When you draw Allure of Darkness (15%)
Useful 0%
Redundant 82.7%
Whiff 0.7%
Disaster 16%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
39.4% → 39.7%
+0.3
39.4% → 39.7%
+0.3
15% → 15.1%
+0.1
Open a key card
87.6% → 86% (-1.6)
Dilutes the deck
Allure unplayable when drawn (no DARK monster to banish)
82.8%
High risk
When you draw Allure of Darkness (26.8%)
Useful 0.4%
Redundant 81.3%
Whiff 0.7%
Disaster 17.5%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
Open a key card
87.6% → 87.7% (+0.1)
Negligible gain
Allure unplayable when drawn (no DARK monster to banish)
81.9%
High risk
When you draw Allure of Darkness (28.1%)
Useful 0.4%
Redundant 83.3%
Whiff 0.7%
Disaster 15.7%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
39.4% → 40%
+0.5
39.4% → 40%
+0.5
15% → 15.2%
+0.2
Open a key card
87.6% → 85.2% (-2.4)
Dilutes the deck
Allure unplayable when drawn (no DARK monster to banish)
83.2%
High risk
When you draw Allure of Darkness (37%)
Useful 0.3%
Redundant 81.1%
Whiff 0.8%
Disaster 18.1%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
Open a key card
87.6% → 87.7% (+0.1)
Negligible gain
Allure unplayable when drawn (no DARK monster to banish)
81.7%
High risk
When you draw Allure of Darkness (39.4%)
Useful 0.3%
Redundant 84%
Whiff 0.8%
Disaster 15.2%
Rarely useful
DARK monsters you can banish (not key cards):
0 / 1
Banishes a key card
39.4% → 40.2%
+0.7
39.4% → 40.2%
+0.7
15% → 15.3%
+0.3
Key cards = every monster except hand traps — click the cards above to choose them.
Detailed analysis
Cards drawn
Your deck plays 5 Mulcharmy.
Odds of having at least 1 in hand: without → with the Mulcharmy draws.
Hand trap ×4
36.3% → 43.6%
+7.3
Board breaker ×3
28.4% → 34.5%
+6.1
Hand trap ×4
36.3% → 50.2%
+13.9
Board breaker ×3
28.4% → 40.3%
+11.9
Hand trap ×4
36.3% → 56.3%
+20
Board breaker ×3
28.4% → 45.7%
+17.3
Hand trap ×4
36.3% → 61.7%
+25.4
Board breaker ×3
28.4% → 50.8%
+22.4
Hand trap ×4
36.3% → 66.7%
+30.4
Board breaker ×3
28.4% → 55.6%
+27.2
Hand trap ×4
36.3% → 71.1%
+34.8
Board breaker ×3
28.4% → 60%
+31.6
Hand trap ×4
36.3% → 75.1%
+38.8
Board breaker ×3
28.4% → 64.2%
+35.8
Hand trap ×4
36.3% → 78.7%
+42.4
Board breaker ×3
28.4% → 68%
+39.6
Hand trap ×4
36.3% → 81.8%
+45.5
Board breaker ×3
28.4% → 71.6%
+43.2
Hand trap ×4
36.3% → 84.6%
+48.3
Board breaker ×3
28.4% → 74.8%
+46.4
Assumes 1 Mulcharmy plus 4 other cards in hand, then the cards drawn from the rest of the deck. Click a card above to follow it.
Mulcharmy Calculator
