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Base Upgraded 
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Necro Mastery
Switch game version2026-06-18
Summon 5.
Whenever Osty loses HP,
ALL enemies lose that much HP as well.
Whenever Osty loses HP,
ALL enemies lose that much HP as well.
Necro Mastery
Power
2
Summon 8.
Whenever Osty loses HP,
ALL enemies lose that much HP as well.
Whenever Osty loses HP,
ALL enemies lose that much HP as well.
Necro Mastery+
Power
2
Summon 5
Summon Osty with 5 HP.
If already summoned, raise his Max HP by 5 for this combat.
Card Effect
Base
Summon 5.
Whenever Osty loses HP,
ALL enemies lose that much HP as well.
Upgraded
Summon 8.
Whenever Osty loses HP,
ALL enemies lose that much HP as well.
Card Stats
- Energy cost
- 2
- Type
- Power
- Rarity
- Rare
- Character
Necrobinder- Target
- Self
- Upgrade
- Available
Tier Rating
Builds Using This Card
Deck archetypes where Necro Mastery is a core or support card.
More Necrobinder Power Cards
At the start of your turn, add 1 random card into your Hand. It gains Ethereal.
Call of the Void
Power
1
Ethereal.
At the start of your turn, gain and draw 1 additional card.
At the start of your turn, gain
and draw 1 additional card.Demesne
Power
3
Whenever you play a Soul, Summon 1.
Devour Life
Power
1
Gain .
Draw 2 cards.
At the start of your turn, apply 3 Doom to yourself.
.Draw 2 cards.
At the start of your turn, apply 3 Doom to yourself.
Neurosurge
Power
0
Whenever Attacks deal damage, apply that much Doom.
Reaper Form
Power
3
At the start of your turn, add 1 Sweeping Gaze into your Hand.
Sentry Mode
Power
2
Whenever you play an Ethereal card, gain 4 Block.
Spirit of Ash
Power
1
Osty's attacks deal 4 additional damage.
Calcify
Power
1