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Necro Mastery
Card Effect
Summon 5.
Whenever Osty loses HP,
ALL enemies lose that much HP as well.
UPGRADE+
summon:+3
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💡 How to Use
Necro Mastery is a cornerstone for Summon-heavy builds, transforming Osty from a defensive shield into a powerful retaliatory damage engine. It is most effective when you have high Summon generation and cards that can intentionally trigger Osty's HP loss for massive AoE bursts.
⚡ Synergies
card
Bone Shards
Forcing Osty to die causes him to lose all current HP, which Necro Mastery converts into a massive damage spike against all enemies. This turns a defensive resource into a finishing move.
card
Sacrifice
This card triggers the full HP loss of Osty to provide block, which Necro Mastery then mirrors as damage to the entire enemy field. It creates a perfect swing turn where you gain massive defense and offense simultaneously.
card
Reanimate
As one of the highest Summon value cards, it provides the necessary health pool for Osty to absorb and reflect significant damage. It ensures that Necro Mastery has a large enough buffer to survive multiple hits while dealing high return damage.
relic
Phylactery Unbound
This relic provides a free Summon 5 at the start of every combat, giving Osty immediate HP to start reflecting damage. It jumpstarts the Necro Mastery engine without requiring additional energy or card plays.