Version

Fasten

ColorlessPowerUncommon
Gain an additional 4 Block from Defend cards.

Each card with the Defend tag that you play gives 4 more Block on top of its own. In the data that tag belongs only to the five starter Defends and Ultimate Defend; Block from any other card, from Plating or from relics is unchanged. The bonus is a flat add, so Dexterity still applies separately. Upgraded, 6 extra.

Pool
Colorless
Type
Power
Rarity
Uncommon
Cost
1 Energy
Target
Yourself

When to take Fasten

Only worth it while you still run several Defends in Act 1; four Defends each gaining 4 more Block for 1 Energy is fine early. Skip it by Act 3, once the Defends are gone.

Cards that synergize with Fasten

Armaments
Skill
1
Gain 5 Block.
Upgrade a card in your Hand.
Armaments upgrades the Defends it boosts.Gain 5 Block.
Upgrade a card in your Hand.
Juggernaut
Power
2
Whenever you gain Block, deal 6 damage to a random enemy.
Juggernaut fires 6 damage on each Defend.Whenever you gain Block, deal 6 damage to a random enemy.
Body Slam
Attack
1
Deal damage equal to your Block.
Body Slam converts the extra Block to damage.Deal damage equal to your Block.
Ultimate Defend
Skill
1
Gain 11 Block.
Ultimate Defend is the one non-starter card it touches.Gain 11 Block.
Signal Boost
Skill
1
The next Power you play is played an additional time.
Exhaust.
Signal Boost triggers on Powers played, and Fasten is oneThe next Power you play is played an additional time.
Exhaust.
Storm
Power
1
Whenever you play a Power, Channel 1 Lightning.
Storm triggers on Powers played, and Fasten is oneWhenever you play a Power, Channel 1 Lightning.
Subroutine
Power
1
Whenever you play a Power, gain .
Subroutine triggers on Powers played, and Fasten is oneWhenever you play a Power, gain .
Synthesis
Attack
2
Deal 14 damage.
The next Power you play costs 0 .
Synthesis triggers on Powers played, and Fasten is oneDeal 14 damage.
The next Power you play costs 0 .

Relics that synergize with Fasten

Vambrace
Vambrace doubles the first boosted Defend of the fight.The first time you gain Block from a card each combat, double the amount gained.
Permafrost
Permafrost triggers on Powers played, and Fasten is oneThe first time you play a Power each combat, gain 7 Block.
Lost Wisp
Lost Wisp triggers on Powers played, and Fasten is oneWhenever you play a Power, deal 8 damage to ALL enemies.
Mummified Hand
Mummified Hand triggers on Powers played, and Fasten is oneWhenever you play a Power, a random card in your Hand is free to play that turn.
Game Piece
Game Piece triggers on Powers played, and Fasten is oneWhenever you play a Power, draw 1 card.
✦
Automation
Power
1
Every 10 cards you draw, gain .
Prep Time
Power
1
At the start of your turn, gain 4 Vigor.
Prowess
Power
1
Gain 1 Strength.
Gain 1 Dexterity.
Stratagem
Power
1
Whenever you shuffle your Draw Pile, choose a card from it to put into your Hand.
Beacon of Hope
Power
1
Whenever you gain Block on your turn, other players gain half that much Block.
Entropy
Power
1
At the start of your turn, Transform 1 card in your Hand.
Nostalgia
Power
1
The first Attack or Skill you play each turn is placed on top of your Draw Pile.
Panache
Power
0
Every time you play 5 cards in a single turn, deal 10 damage to ALL enemies.

Changes by version

  1. 21 May 2026Additional Block5(7)4(6)Beta branch
    Additional Block decreased from 5 to 4 (upgraded 7 to 6)
  2. 25 Sep 2025Bug fixInternal playtest
    Fixed an issue where Fasten card's detail screen couldn't be viewed in the Card Library
  3. 21 Aug 2025TextInternal playtest
    Updated wording
All 8 patch notes5 older
  1. 14 Aug 2025TextInternal playtest
    Improved wording
  2. 5 Jun 2025Bug fixUltimate DefendInternal playtest
    Fasten card now properly adds Block to Ultimate Defend card
  3. 6 Feb 2025Block upgrade+3+2Internal playtest
    Upgrade Block decreased from +3 to +2
  4. 23 Aug 2024ArtInternal playtest
    Added card art
  5. 12 Jul 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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