Sourcemined
Slay the Spire 2
CardNecrobinderReward oddsVerified on build 23811903
Necro Mastery art

Necro Mastery

Summon 5.
Whenever Osty loses HP,
ALL enemies lose that much HP as well.

In numbers

Per playBaseUpgradedPer Energy
Energy cost22
Summon582.5 → 4

Summon: #3 of 7 Necrobinder cards with Summon

  1. Reanimate20 3 Energy · 25 upgraded
  2. Afterlife6 1 Energy · 9 upgraded
  3. Bodyguard5 1 Energy · 7 upgraded
  4. Necro Mastery5 2 Energy · 8 upgraded
  5. Pull Aggro4 2 Energy · 5 upgraded
  6. Cleanse3 1 Energy · 5 upgraded
  7. Spur3 1 Energy · 5 upgraded
Summon per play (base), with Energy cost and upgraded value. Per Energy it ranks #6 of 7.

Chance it's offered

Chance this card is one of the cards in a single Necrobinder reward, with every card unlocked. It's one of 25 rare Necrobinder cards, and each card's rarity rolls against a hidden offset that grows until a rare shows up.

RewardRight after a rareRun average
Regular fight · 3 cards0%0.79%
Elite fight · 3 cards0.71%1.3%
Boss · 3 rares12%12%
  • About one regular reward in 127 offers it over a run.

See the odds for your exact situation in the card reward odds calculator.

Upgraded

Summon 8. Whenever Osty loses HP, ALL enemies lose that much HP as well.

  • Summon +3

Overview

Character
Necrobinder
Rarity
rare
Type
Power
Energy cost
2
Target
Self
Shop price
143–158
Game ID
NecroMastery

Same odds: the other rare Necrobinder cards 24

Raw game dataAs extracted from the game's definitions
  • cost2
  • kindPower
  • rarityRare
  • targetSelf
  • poolNecrobinder
  • keywords[]
  • vars{1}
    • Summon5
  • upgrade{4}
    • vars{1}
      • Summon3
    • addKeywords[]
    • removeKeywords[]
    • descSummon 8. Whenever Osty loses HP, ALL enemies lose that much HP as well.
  • shopPrice{2}
    • min143
    • max158
  • shopChance0.004999999999999999
  • shopPool{2}
    • Uncommon9
    • Rare8