Bone Shards

NecrobinderAttackUncommon
If Osty is alive, he deals 9 damage to ALL enemies and you gain 9 Block.
Osty dies.
  • If Osty is alive: he deals 9 damage, 12 upgraded, to every enemy, you gain 9 Block, 12 upgraded, and then he dies.
  • Osty is the attacker: your Strength does not add to the hit, but Calcify does, and Dexterity adds to the Block.
  • Osty's HP does not matter: a 1-HP Osty gives the full effect.
  • If he is missing, the card does nothing and glows red as a warning.
Character
Necrobinder
Type
Attack
Rarity
Uncommon
Cost
1 Energy
Target
All enemies

When to take Bone Shards

Worth it once you can re-summon cheaply every turn. With Bound Phylactery summoning each turn, it is 9 area damage and 9 Block for 1 Energy, good from Act 1 on.

Cards that synergize with Bone Shards

Calcify
Power
1
Osty's attacks deal 4 additional damage.
Calcify adds 4 to the hit on every enemy.Osty's attacks deal 4 additional damage.
Spur
Skill
1
Retain.
Summon 3.
Osty heals 5 HP.
Spur and Afterlife put him back cheaply.Retain.
Summon 3.
Osty heals 5 HP.
Afterlife
Skill
1
Summon 6.
Exhaust.
Spur and Afterlife put him back cheaply.Summon 6.
Exhaust.
Squeeze
Attack
3
Osty deals 25 damage.
Deals 5 additional damage for ALL your other Osty Attacks.
Squeeze counts it as another Osty Attack.Osty deals 25 damage.
Deals 5 additional damage for ALL your other Osty Attacks.
Reanimate
Skill
3
Summon 20.
Exhaust.
Reanimate Summons Osty, whom Bone Shards counts onSummon 20.
Exhaust.
Bodyguard
Skill
1
Summon 5.
Bodyguard Summons Osty, whom Bone Shards counts onSummon 5.
Legion of Bone
Skill
2
ALL players Summon 6.
Exhaust.
Legion of Bone Summons Osty, whom Bone Shards counts onALL players Summon 6.
Exhaust.
Necro Mastery
Power
2
Summon 5.
Whenever Osty loses HP,
ALL enemies lose that much HP as well.
Necro Mastery Summons Osty, whom Bone Shards counts onSummon 5.
Whenever Osty loses HP,
ALL enemies lose that much HP as well.
Pull Aggro
Skill
2
Summon 4.
Gain 7 Block.
Pull Aggro Summons Osty, whom Bone Shards counts onSummon 4.
Gain 7 Block.
Cleanse
Skill
1
Summon 3.
Exhaust 1 card from your Draw Pile.
Cleanse Summons Osty, whom Bone Shards counts onSummon 3.
Exhaust 1 card from your Draw Pile.
Dirge
Skill
X
Summon 3 X times.
Add X Souls into your Draw Pile.
Exhaust.
Dirge Summons Osty, whom Bone Shards counts onSummon 3 X times.
Add X Souls into your Draw Pile.
Exhaust.
Sic 'Em
Attack
1
Osty deals 5 damage.
Whenever Osty hits this enemy this turn, Summon 3.
Sic 'Em Summons Osty, whom Bone Shards counts onOsty deals 5 damage.
Whenever Osty hits this enemy this turn, Summon 3.
Invoke
Skill
1
Next turn, Summon 2 and gain .
Invoke Summons Osty, whom Bone Shards counts onNext turn, Summon 2 and gain .
Devour Life
Power
1
Whenever you play a Soul, Summon 1.
Devour Life Summons Osty, whom Bone Shards counts onWhenever you play a Soul, Summon 1.
Beacon of Hope
Power
1
Whenever you gain Block on your turn, other players gain half that much Block.
Beacon of Hope makes Block count for more, and Bone Shards gains itWhenever you gain Block on your turn, other players gain half that much Block.
Entrench
Skill
2
Double your Block.
Entrench makes Block count for more, and Bone Shards gains itDouble your Block.
Prolong
Skill
0
Next turn, gain Block equal to your current Block.
Exhaust.
Prolong makes Block count for more, and Bone Shards gains itNext turn, gain Block equal to your current Block.
Exhaust.

Relics that synergize with Bone Shards

Bound Phylactery
Bound Phylactery revives Osty each turn for the next Bone Shards.At the start of your turn, Summon 1.
Bone Flute
Bone Flute gives 2 Block because Osty attacked.Whenever Osty attacks, gain 2 Block.
Phylactery Unbound
Phylactery Unbound Summons Osty, whom Bone Shards counts onAt the start of each combat, Summon 5. At the start of your turn, Summon 2.
Parrying Shield
Parrying Shield makes Block count for more, and Bone Shards gains itIf you end a turn with at least 10 Block, deal 6 damage to a random enemy.
Sturdy Clamp
Sturdy Clamp makes Block count for more, and Bone Shards gains itUp to 10 Block persists across turns.
Pael's Legion
Pael's Legion makes Block count for more, and Bone Shards gains itDoubles Block gained from a card, then goes to sleep for 2 turns.
Vambrace
Vambrace makes Block count for more, and Bone Shards gains itThe first time you gain Block from a card each combat, double the amount gained.
✦
Rattle
Attack
1
Osty deals 7 damage.
Hits an additional time for each other time he has attacked this turn.
Sic 'Em
Attack
1
Osty deals 5 damage.
Whenever Osty hits this enemy this turn, Summon 3.
Fetch
Attack
0
Osty deals 3 damage.
If this is the first time this card has been played this turn, draw 1 card.
High Five
Attack
2
Osty deals 11 damage
and applies 2 Vulnerable
to ALL enemies.
Protector
Attack
1
Osty deals 10 damage.
Deals additional damage equal to Osty's Max HP.
Right Hand Hand
Attack
0
Osty deals 4 damage.
Whenever you play a card that costs or more, return this to your Hand from the Discard Pile.
Snap
Attack
1
Osty deals 7 damage.
Add Retain to a card in your Hand.
Unleash
Attack
1
Osty deals 6 damage.
Deals additional damage equal to Osty's current HP.

Changes by version

  1. 30 Oct 2025Bug fixFresnel LensInternal playtest
    Fresnel Lens relic now applies Nimble to Bone Shards card
  2. 26 Jun 2025ReworkInternal playtest
    Reworked the card
  3. 1 May 2025ArtInternal playtest
    Updated card title from Bone Shard to Bone Shards
All 9 patch notes6 older
  1. 27 Feb 2025TextInternal playtest
    Bone Shards card now displays how much damage it will do
  2. 13 Feb 2025ReworkInternal playtest
    Reworked the card
  3. 16 Jan 2025ReworkInternal playtest
    Reworked the card
  4. 5 Dec 2024Damage30(40)20(25)Internal playtest
    Damage decreased from 30 to 20 (upgraded 40 to 25)
  5. 7 Nov 2024Bug fixOstyInternal playtest
    Damage from Bone Shards card is now properly dealt by Osty instead of the player
  6. 1 Nov 2024AddedInternal playtest
    Added to the game

Internal playtest notes are from before the Early Access release. Names and numbers in them can differ from the game today.

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